/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:10,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:10,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:10,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:10,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:10,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:10,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:10,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:10,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:10,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:10,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:10,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:10,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:10,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:10,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:10,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:10,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:10,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:10,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:10,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:10,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:10,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:10,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:10,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:10,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:00:10,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:00:10,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:00:10,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:00:10,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:00:10,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:00:10,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:00:10,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:00:10,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:00:10,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:10,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:10,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:10,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:10,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:10,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:10,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:10,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:10,891 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:10,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:10,891 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:10,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:10,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:10,892 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:10,892 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:10,892 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:10,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:10,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:10,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:10,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:10,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:10,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:10,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:10,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:10,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:10,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:10,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:10,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:10,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:11,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:11,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:11,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:11,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:11,338 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:11,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2021-01-07 05:00:11,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9535658be/b7f0dd009f9b4624bde52cb72134f8a7/FLAGc7dd4b0cc [2021-01-07 05:00:12,213 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:12,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2021-01-07 05:00:12,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9535658be/b7f0dd009f9b4624bde52cb72134f8a7/FLAGc7dd4b0cc [2021-01-07 05:00:12,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9535658be/b7f0dd009f9b4624bde52cb72134f8a7 [2021-01-07 05:00:12,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:12,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:12,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:12,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:12,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:12,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:12" (1/1) ... [2021-01-07 05:00:12,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348498cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:12, skipping insertion in model container [2021-01-07 05:00:12,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:12" (1/1) ... [2021-01-07 05:00:12,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:12,517 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~uc1~0,] left hand side expression in assignment: lhs: VariableLHS[~uc2~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:12,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:12,900 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~uc1~0,] left hand side expression in assignment: lhs: VariableLHS[~uc2~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:12,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:13,039 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:13,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13 WrapperNode [2021-01-07 05:00:13,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:13,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:13,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:13,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:13,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:13,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:13,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:13,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:13,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (1/1) ... [2021-01-07 05:00:13,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:13,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:13,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:13,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:13,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (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 [2021-01-07 05:00:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:00:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:00:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:00:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:13,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:13,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:13,846 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:00:13,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:13 BoogieIcfgContainer [2021-01-07 05:00:13,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:13,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:13,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:13,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:13,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:12" (1/3) ... [2021-01-07 05:00:13,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd0bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:13, skipping insertion in model container [2021-01-07 05:00:13,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:13" (2/3) ... [2021-01-07 05:00:13,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd0bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:13, skipping insertion in model container [2021-01-07 05:00:13,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:13" (3/3) ... [2021-01-07 05:00:13,857 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcmp-alloca-2.i [2021-01-07 05:00:13,865 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:13,871 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2021-01-07 05:00:13,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-01-07 05:00:13,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:13,919 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:13,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:13,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:13,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:13,920 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:13,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:13,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-01-07 05:00:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:13,946 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:13,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:13,947 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:13,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:00:13,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:13,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891845099] [2021-01-07 05:00:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:14,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891845099] [2021-01-07 05:00:14,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:14,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:14,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625745540] [2021-01-07 05:00:14,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:14,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:14,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:14,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:14,217 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2021-01-07 05:00:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:14,311 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-01-07 05:00:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:14,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:14,339 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:14,340 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:00:14,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:00:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2021-01-07 05:00:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-01-07 05:00:14,393 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 7 [2021-01-07 05:00:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:14,393 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-01-07 05:00:14,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-01-07 05:00:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:14,394 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:14,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:14,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:14,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-01-07 05:00:14,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:14,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310413173] [2021-01-07 05:00:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:14,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310413173] [2021-01-07 05:00:14,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:14,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:14,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281903204] [2021-01-07 05:00:14,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:14,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:14,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:14,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:14,466 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 3 states. [2021-01-07 05:00:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:14,524 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-01-07 05:00:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:14,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:00:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:14,526 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:00:14,526 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:00:14,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:00:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:00:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:00:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-01-07 05:00:14,534 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 7 [2021-01-07 05:00:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:14,535 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-01-07 05:00:14,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-01-07 05:00:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:14,536 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:14,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:14,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:14,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:00:14,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:14,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886904413] [2021-01-07 05:00:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:14,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886904413] [2021-01-07 05:00:14,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:14,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:14,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133223665] [2021-01-07 05:00:14,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:14,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:14,611 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 4 states. [2021-01-07 05:00:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:14,745 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-01-07 05:00:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:14,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:14,748 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:00:14,748 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:00:14,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:00:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 54. [2021-01-07 05:00:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-01-07 05:00:14,764 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 7 [2021-01-07 05:00:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:14,765 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-01-07 05:00:14,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-01-07 05:00:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:14,767 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:14,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:14,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:14,768 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-01-07 05:00:14,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:14,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805300248] [2021-01-07 05:00:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:14,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805300248] [2021-01-07 05:00:14,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:14,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:14,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104339514] [2021-01-07 05:00:14,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:14,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:14,908 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2021-01-07 05:00:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:14,963 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:00:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:14,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:14,967 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:00:14,967 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:00:14,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:00:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:00:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:00:14,981 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 9 [2021-01-07 05:00:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:14,981 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:00:14,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:00:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:14,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:14,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:14,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:00:14,984 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-01-07 05:00:14,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:14,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850196069] [2021-01-07 05:00:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850196069] [2021-01-07 05:00:15,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:15,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:15,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781834500] [2021-01-07 05:00:15,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:15,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:15,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:15,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:15,108 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2021-01-07 05:00:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:15,136 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-01-07 05:00:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:15,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:15,138 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:00:15,138 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:15,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 64. [2021-01-07 05:00:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-01-07 05:00:15,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 9 [2021-01-07 05:00:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:15,149 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-01-07 05:00:15,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-01-07 05:00:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:15,150 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:15,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:15,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:00:15,151 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-01-07 05:00:15,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:15,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750353319] [2021-01-07 05:00:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750353319] [2021-01-07 05:00:15,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:15,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:15,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748704922] [2021-01-07 05:00:15,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:15,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:15,224 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 3 states. [2021-01-07 05:00:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:15,254 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2021-01-07 05:00:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:15,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:00:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:15,255 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:00:15,255 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:15,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-01-07 05:00:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:00:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-01-07 05:00:15,261 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 9 [2021-01-07 05:00:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:15,262 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-01-07 05:00:15,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-01-07 05:00:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:15,262 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:15,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:15,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:00:15,263 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-01-07 05:00:15,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:15,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28197348] [2021-01-07 05:00:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28197348] [2021-01-07 05:00:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:15,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:15,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179594590] [2021-01-07 05:00:15,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:15,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:15,319 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 5 states. [2021-01-07 05:00:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:15,428 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2021-01-07 05:00:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:15,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:00:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:15,432 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:00:15,432 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:15,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 64. [2021-01-07 05:00:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-01-07 05:00:15,451 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 9 [2021-01-07 05:00:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:15,453 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-01-07 05:00:15,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-01-07 05:00:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:15,454 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:15,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:15,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:00:15,455 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-01-07 05:00:15,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:15,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371021377] [2021-01-07 05:00:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371021377] [2021-01-07 05:00:15,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:15,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:15,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876004154] [2021-01-07 05:00:15,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:15,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:15,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:15,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:15,556 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 4 states. [2021-01-07 05:00:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:15,614 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-01-07 05:00:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:15,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:00:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:15,616 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:00:15,616 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:00:15,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:00:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-07 05:00:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:00:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-01-07 05:00:15,629 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 10 [2021-01-07 05:00:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:15,630 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-01-07 05:00:15,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-01-07 05:00:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:00:15,631 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:15,631 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:15,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:00:15,635 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:15,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:00:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:15,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590326686] [2021-01-07 05:00:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590326686] [2021-01-07 05:00:15,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988036659] [2021-01-07 05:00:15,721 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 [2021-01-07 05:00:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:15,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:00:15,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:15,860 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2021-01-07 05:00:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:15,880 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:00:15,882 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:15,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:15,901 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 10 treesize of output 8 [2021-01-07 05:00:15,909 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:15,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:15,922 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:15,922 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:15,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:15,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:00:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942649236] [2021-01-07 05:00:15,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:15,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:15,964 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 6 states. [2021-01-07 05:00:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:16,107 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2021-01-07 05:00:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:16,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:00:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:16,109 INFO L225 Difference]: With dead ends: 105 [2021-01-07 05:00:16,109 INFO L226 Difference]: Without dead ends: 105 [2021-01-07 05:00:16,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-07 05:00:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 58. [2021-01-07 05:00:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:00:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-01-07 05:00:16,114 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 11 [2021-01-07 05:00:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:16,114 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-01-07 05:00:16,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-01-07 05:00:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:16,115 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:16,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:16,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-07 05:00:16,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:16,333 INFO L82 PathProgramCache]: Analyzing trace with hash -464624129, now seen corresponding path program 1 times [2021-01-07 05:00:16,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:16,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210199021] [2021-01-07 05:00:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:16,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210199021] [2021-01-07 05:00:16,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:16,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:16,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409046816] [2021-01-07 05:00:16,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:16,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:16,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:16,418 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 6 states. [2021-01-07 05:00:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:16,543 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2021-01-07 05:00:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:16,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:00:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:16,545 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:00:16,545 INFO L226 Difference]: Without dead ends: 81 [2021-01-07 05:00:16,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-07 05:00:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2021-01-07 05:00:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:00:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-01-07 05:00:16,549 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 12 [2021-01-07 05:00:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:16,549 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-01-07 05:00:16,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-01-07 05:00:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:16,554 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:16,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:16,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:00:16,554 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2021-01-07 05:00:16,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:16,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090810752] [2021-01-07 05:00:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:16,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090810752] [2021-01-07 05:00:16,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:16,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:16,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447710277] [2021-01-07 05:00:16,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:16,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:16,612 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 4 states. [2021-01-07 05:00:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:16,657 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2021-01-07 05:00:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:16,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-07 05:00:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:16,658 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:00:16,658 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:00:16,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:00:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-07 05:00:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:00:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-01-07 05:00:16,664 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 12 [2021-01-07 05:00:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:16,664 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-01-07 05:00:16,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-01-07 05:00:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:00:16,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:16,669 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:16,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:00:16,670 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:16,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-01-07 05:00:16,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:16,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71093858] [2021-01-07 05:00:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:16,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71093858] [2021-01-07 05:00:16,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790295157] [2021-01-07 05:00:16,775 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 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 [2021-01-07 05:00:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:16,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:00:16,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:16,856 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:16,860 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:16,866 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:16,889 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:16,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:16,895 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:16,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:16,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:00:16,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221263802] [2021-01-07 05:00:16,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:16,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:16,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:16,950 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 7 states. [2021-01-07 05:00:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:17,067 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2021-01-07 05:00:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:17,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:00:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:17,068 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:17,068 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:00:17,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:00:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 60. [2021-01-07 05:00:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:00:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-01-07 05:00:17,072 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 13 [2021-01-07 05:00:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:17,072 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-01-07 05:00:17,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-01-07 05:00:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:17,073 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:17,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:17,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:00:17,290 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1432374396, now seen corresponding path program 1 times [2021-01-07 05:00:17,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:17,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452927856] [2021-01-07 05:00:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:17,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452927856] [2021-01-07 05:00:17,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:17,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:17,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632423664] [2021-01-07 05:00:17,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:17,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:17,335 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 4 states. [2021-01-07 05:00:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:17,380 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-01-07 05:00:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:17,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-07 05:00:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:17,381 INFO L225 Difference]: With dead ends: 58 [2021-01-07 05:00:17,381 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:00:17,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:00:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-01-07 05:00:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:00:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-01-07 05:00:17,384 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 16 [2021-01-07 05:00:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:17,384 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-01-07 05:00:17,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-01-07 05:00:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:17,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:17,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:17,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:00:17,386 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1432374395, now seen corresponding path program 1 times [2021-01-07 05:00:17,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:17,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577785] [2021-01-07 05:00:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:17,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577785] [2021-01-07 05:00:17,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:17,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:17,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74319300] [2021-01-07 05:00:17,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:17,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:17,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:17,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:17,470 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2021-01-07 05:00:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:17,544 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-01-07 05:00:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:17,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-07 05:00:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:17,545 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:00:17,545 INFO L226 Difference]: Without dead ends: 66 [2021-01-07 05:00:17,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-07 05:00:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-01-07 05:00:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:00:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2021-01-07 05:00:17,548 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 16 [2021-01-07 05:00:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2021-01-07 05:00:17,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2021-01-07 05:00:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:17,550 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:17,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:17,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:00:17,550 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1432365322, now seen corresponding path program 1 times [2021-01-07 05:00:17,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:17,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609704563] [2021-01-07 05:00:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:17,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609704563] [2021-01-07 05:00:17,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:17,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:17,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582367443] [2021-01-07 05:00:17,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:17,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:17,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:17,590 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 3 states. [2021-01-07 05:00:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:17,601 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-01-07 05:00:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:17,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:00:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:17,602 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:00:17,602 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:17,605 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 [2021-01-07 05:00:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-01-07 05:00:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:00:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-01-07 05:00:17,610 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 16 [2021-01-07 05:00:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:17,610 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-01-07 05:00:17,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-01-07 05:00:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:00:17,611 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:17,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:17,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:00:17,612 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1365500555, now seen corresponding path program 1 times [2021-01-07 05:00:17,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:17,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829705643] [2021-01-07 05:00:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:17,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829705643] [2021-01-07 05:00:17,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:17,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:00:17,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467669260] [2021-01-07 05:00:17,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:17,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:17,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:17,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:17,777 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 8 states. [2021-01-07 05:00:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:17,937 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2021-01-07 05:00:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:17,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-07 05:00:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:17,939 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:00:17,939 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:00:17,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:00:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:00:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2021-01-07 05:00:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:00:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-01-07 05:00:17,942 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 19 [2021-01-07 05:00:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:17,943 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-01-07 05:00:17,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-01-07 05:00:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:00:17,943 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:17,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:17,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:00:17,944 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:17,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1341118839, now seen corresponding path program 1 times [2021-01-07 05:00:17,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:17,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143529053] [2021-01-07 05:00:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:18,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143529053] [2021-01-07 05:00:18,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:18,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:00:18,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813871554] [2021-01-07 05:00:18,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:00:18,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:18,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:00:18,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:00:18,100 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 9 states. [2021-01-07 05:00:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:18,301 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2021-01-07 05:00:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:00:18,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2021-01-07 05:00:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:18,302 INFO L225 Difference]: With dead ends: 106 [2021-01-07 05:00:18,302 INFO L226 Difference]: Without dead ends: 106 [2021-01-07 05:00:18,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:00:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-07 05:00:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 77. [2021-01-07 05:00:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:00:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2021-01-07 05:00:18,306 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 19 [2021-01-07 05:00:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:18,306 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2021-01-07 05:00:18,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:00:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2021-01-07 05:00:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:00:18,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:18,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:18,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:00:18,307 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1756023060, now seen corresponding path program 1 times [2021-01-07 05:00:18,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:18,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894566049] [2021-01-07 05:00:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:18,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894566049] [2021-01-07 05:00:18,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:18,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-07 05:00:18,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271851629] [2021-01-07 05:00:18,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:00:18,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:18,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:00:18,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:00:18,505 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand 13 states. [2021-01-07 05:00:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:18,860 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2021-01-07 05:00:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:18,861 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2021-01-07 05:00:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:18,862 INFO L225 Difference]: With dead ends: 134 [2021-01-07 05:00:18,862 INFO L226 Difference]: Without dead ends: 134 [2021-01-07 05:00:18,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:00:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-07 05:00:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 95. [2021-01-07 05:00:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:00:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-01-07 05:00:18,868 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 23 [2021-01-07 05:00:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:18,869 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-01-07 05:00:18,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:00:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-01-07 05:00:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:00:18,869 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:18,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:18,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:00:18,870 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:18,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1756082642, now seen corresponding path program 1 times [2021-01-07 05:00:18,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:18,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489288329] [2021-01-07 05:00:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:18,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489288329] [2021-01-07 05:00:18,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:18,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:18,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105699090] [2021-01-07 05:00:18,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:18,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:18,993 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 4 states. [2021-01-07 05:00:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,032 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-01-07 05:00:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:19,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-01-07 05:00:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,033 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:00:19,034 INFO L226 Difference]: Without dead ends: 55 [2021-01-07 05:00:19,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-07 05:00:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-01-07 05:00:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:00:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-01-07 05:00:19,037 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 23 [2021-01-07 05:00:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,037 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-01-07 05:00:19,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-01-07 05:00:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:00:19,040 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:00:19,041 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1222026810, now seen corresponding path program 1 times [2021-01-07 05:00:19,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041405911] [2021-01-07 05:00:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041405911] [2021-01-07 05:00:19,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289665790] [2021-01-07 05:00:19,149 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 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 [2021-01-07 05:00:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:00:19,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:19,252 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2021-01-07 05:00:19,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:19,257 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:00:19,259 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:19,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:19,280 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 10 treesize of output 8 [2021-01-07 05:00:19,283 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:19,292 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:19,297 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:19,298 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:19,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-01-07 05:00:19,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68584754] [2021-01-07 05:00:19,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:00:19,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:00:19,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:00:19,412 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 12 states. [2021-01-07 05:00:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,683 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-01-07 05:00:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:19,684 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2021-01-07 05:00:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,685 INFO L225 Difference]: With dead ends: 68 [2021-01-07 05:00:19,685 INFO L226 Difference]: Without dead ends: 68 [2021-01-07 05:00:19,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:00:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-07 05:00:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-01-07 05:00:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:00:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-01-07 05:00:19,687 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 23 [2021-01-07 05:00:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,688 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-01-07 05:00:19,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:00:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-01-07 05:00:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:00:19,688 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:19,902 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash 340221504, now seen corresponding path program 1 times [2021-01-07 05:00:19,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247458997] [2021-01-07 05:00:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:20,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247458997] [2021-01-07 05:00:20,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642332126] [2021-01-07 05:00:20,208 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 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 [2021-01-07 05:00:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:00:20,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:20,341 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:20,341 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:20,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:20,351 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. [2021-01-07 05:00:20,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:20,777 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:20,778 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 52 [2021-01-07 05:00:20,782 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:20,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:20,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:20,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:00:20,827 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:00:20,830 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:20,830 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:49, output treesize:35 [2021-01-07 05:00:20,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:20,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:20,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:20,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:20,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-01-07 05:00:20,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326677377] [2021-01-07 05:00:20,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:00:20,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:00:20,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:00:20,967 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 21 states. [2021-01-07 05:00:21,640 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2021-01-07 05:00:21,809 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-07 05:00:22,023 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-01-07 05:00:22,283 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-01-07 05:00:22,618 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-01-07 05:00:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:23,761 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2021-01-07 05:00:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-07 05:00:23,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2021-01-07 05:00:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:23,763 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:23,763 INFO L226 Difference]: Without dead ends: 70 [2021-01-07 05:00:23,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:00:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-07 05:00:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-01-07 05:00:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-01-07 05:00:23,767 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 27 [2021-01-07 05:00:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:23,767 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-01-07 05:00:23,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:00:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-01-07 05:00:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:00:23,768 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:23,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:23,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:23,982 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash -459022281, now seen corresponding path program 2 times [2021-01-07 05:00:23,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:23,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994239539] [2021-01-07 05:00:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:24,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994239539] [2021-01-07 05:00:24,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130776630] [2021-01-07 05:00:24,073 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 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 [2021-01-07 05:00:24,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:24,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:00:24,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:24,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:00:24,177 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:24,180 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-01-07 05:00:24,333 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:24,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-01-07 05:00:24,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:24,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:30, output treesize:8 [2021-01-07 05:00:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-07 05:00:24,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:00:24,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2021-01-07 05:00:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847263604] [2021-01-07 05:00:24,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:00:24,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:00:24,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:00:24,392 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 11 states. [2021-01-07 05:00:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:24,830 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-01-07 05:00:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:24,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2021-01-07 05:00:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:24,834 INFO L225 Difference]: With dead ends: 74 [2021-01-07 05:00:24,834 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:00:24,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:00:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:00:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:00:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:00:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-01-07 05:00:24,837 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2021-01-07 05:00:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:24,837 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-01-07 05:00:24,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:00:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-01-07 05:00:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:00:24,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:24,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:25,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:00:25,050 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:25,051 INFO L82 PathProgramCache]: Analyzing trace with hash 242577593, now seen corresponding path program 1 times [2021-01-07 05:00:25,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:25,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324021292] [2021-01-07 05:00:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:25,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324021292] [2021-01-07 05:00:25,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511361979] [2021-01-07 05:00:25,194 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 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 [2021-01-07 05:00:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:00:25,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:25,300 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:25,301 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:25,303 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:25,319 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2021-01-07 05:00:25,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:25,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2021-01-07 05:00:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:25,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:00:25,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-01-07 05:00:25,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461069789] [2021-01-07 05:00:25,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:25,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:25,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:25,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:00:25,476 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2021-01-07 05:00:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:25,649 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-01-07 05:00:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:00:25,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-01-07 05:00:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:25,652 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:00:25,652 INFO L226 Difference]: Without dead ends: 56 [2021-01-07 05:00:25,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-07 05:00:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-01-07 05:00:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-01-07 05:00:25,655 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 34 [2021-01-07 05:00:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:25,655 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-01-07 05:00:25,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-01-07 05:00:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:00:25,656 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:25,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:25,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:25,871 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:25,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1342695082, now seen corresponding path program 1 times [2021-01-07 05:00:25,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:25,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575717672] [2021-01-07 05:00:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:25,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575717672] [2021-01-07 05:00:25,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048170332] [2021-01-07 05:00:25,985 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 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 [2021-01-07 05:00:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-07 05:00:26,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:26,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:26,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-01-07 05:00:26,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089329226] [2021-01-07 05:00:26,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:00:26,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:00:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:00:26,228 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 15 states. [2021-01-07 05:00:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,514 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-01-07 05:00:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:26,515 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2021-01-07 05:00:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,515 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:00:26,516 INFO L226 Difference]: Without dead ends: 66 [2021-01-07 05:00:26,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:00:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-07 05:00:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-01-07 05:00:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:00:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-01-07 05:00:26,519 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 38 [2021-01-07 05:00:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,519 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-01-07 05:00:26,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:00:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-01-07 05:00:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-07 05:00:26,520 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:26,734 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1493295964, now seen corresponding path program 1 times [2021-01-07 05:00:26,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770006439] [2021-01-07 05:00:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770006439] [2021-01-07 05:00:27,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385432468] [2021-01-07 05:00:27,393 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 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 [2021-01-07 05:00:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:00:27,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:27,653 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:27,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:27,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:27,663 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. [2021-01-07 05:00:27,664 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2021-01-07 05:00:28,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:29,043 WARN L197 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-01-07 05:00:29,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:29,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:29,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:00:29,690 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:29,690 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 118 [2021-01-07 05:00:29,707 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:00:29,709 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:00:29,710 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:00:29,710 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:00:29,722 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,814 INFO L625 ElimStorePlain]: treesize reduction 96, result has 32.9 percent of original size [2021-01-07 05:00:29,821 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,822 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:71, output treesize:8 [2021-01-07 05:00:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:29,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:29,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 37 [2021-01-07 05:00:29,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227682193] [2021-01-07 05:00:29,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-07 05:00:29,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-07 05:00:29,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:00:29,894 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 37 states. [2021-01-07 05:00:31,503 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-01-07 05:00:31,706 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-01-07 05:00:31,973 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:00:32,286 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-01-07 05:00:40,501 WARN L197 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-01-07 05:00:40,687 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-01-07 05:00:40,867 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-01-07 05:00:41,196 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-01-07 05:00:41,615 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-01-07 05:00:42,014 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-01-07 05:00:42,222 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2021-01-07 05:00:42,473 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-01-07 05:00:42,807 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-07 05:00:43,101 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-01-07 05:00:43,303 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-01-07 05:00:43,464 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-01-07 05:00:43,640 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-01-07 05:00:43,830 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-01-07 05:00:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:44,146 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-01-07 05:00:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-07 05:00:44,146 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 42 [2021-01-07 05:00:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:44,147 INFO L225 Difference]: With dead ends: 165 [2021-01-07 05:00:44,148 INFO L226 Difference]: Without dead ends: 131 [2021-01-07 05:00:44,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2021-01-07 05:00:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-07 05:00:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 66. [2021-01-07 05:00:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:00:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-01-07 05:00:44,153 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 42 [2021-01-07 05:00:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:44,153 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-01-07 05:00:44,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-07 05:00:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-01-07 05:00:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-07 05:00:44,154 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:44,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:44,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:00:44,368 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 794074873, now seen corresponding path program 2 times [2021-01-07 05:00:44,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:44,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440312634] [2021-01-07 05:00:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:44,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440312634] [2021-01-07 05:00:44,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830731641] [2021-01-07 05:00:44,499 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 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 [2021-01-07 05:00:44,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:44,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:44,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:00:44,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:44,599 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,600 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:44,601 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,618 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:44,621 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,621 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:44,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:44,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-07 05:00:44,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760468862] [2021-01-07 05:00:44,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:00:44,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:44,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:00:44,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:00:44,826 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 17 states. [2021-01-07 05:00:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,074 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-01-07 05:00:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:45,074 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2021-01-07 05:00:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,076 INFO L225 Difference]: With dead ends: 68 [2021-01-07 05:00:45,076 INFO L226 Difference]: Without dead ends: 64 [2021-01-07 05:00:45,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:00:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-07 05:00:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-01-07 05:00:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-01-07 05:00:45,079 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 46 [2021-01-07 05:00:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,079 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-01-07 05:00:45,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:00:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-01-07 05:00:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:00:45,080 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:45,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:00:45,294 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash -395309695, now seen corresponding path program 2 times [2021-01-07 05:00:45,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:45,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330008780] [2021-01-07 05:00:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:45,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330008780] [2021-01-07 05:00:45,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349230535] [2021-01-07 05:00:45,532 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 [2021-01-07 05:00:45,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:45,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:00:45,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:45,637 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:45,638 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:45,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:45,656 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:45,658 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:45,658 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:45,819 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:00:45,820 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:45,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:45,825 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:45,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:46,282 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 24 treesize of output 18 [2021-01-07 05:00:46,285 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:46,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:46,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:00:46,322 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:46,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-01-07 05:00:46,325 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:46,359 INFO L625 ElimStorePlain]: treesize reduction 15, result has 66.7 percent of original size [2021-01-07 05:00:46,363 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:46,363 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:8 [2021-01-07 05:00:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:00:46,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:46,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 28 [2021-01-07 05:00:46,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302971617] [2021-01-07 05:00:46,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:00:46,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:46,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:00:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:00:46,414 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 28 states. [2021-01-07 05:00:47,252 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-07 05:00:47,764 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-07 05:00:48,322 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-07 05:00:48,511 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:00:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:49,629 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2021-01-07 05:00:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:00:49,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 49 [2021-01-07 05:00:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:49,631 INFO L225 Difference]: With dead ends: 159 [2021-01-07 05:00:49,631 INFO L226 Difference]: Without dead ends: 78 [2021-01-07 05:00:49,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=565, Invalid=3217, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:00:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-07 05:00:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2021-01-07 05:00:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-07 05:00:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-01-07 05:00:49,635 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 49 [2021-01-07 05:00:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:49,636 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-01-07 05:00:49,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:00:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-01-07 05:00:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-07 05:00:49,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:49,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:49,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:00:49,838 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:49,839 INFO L82 PathProgramCache]: Analyzing trace with hash -2098265017, now seen corresponding path program 3 times [2021-01-07 05:00:49,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871525336] [2021-01-07 05:00:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:50,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871525336] [2021-01-07 05:00:50,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965433628] [2021-01-07 05:00:50,048 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 [2021-01-07 05:00:50,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:00:50,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:50,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:00:50,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:50,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:50,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-01-07 05:00:50,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131436853] [2021-01-07 05:00:50,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:00:50,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:50,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:00:50,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:00:50,439 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 21 states. [2021-01-07 05:00:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:50,821 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-01-07 05:00:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:00:50,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2021-01-07 05:00:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:50,823 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:00:50,823 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:00:50,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:00:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:00:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2021-01-07 05:00:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:00:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2021-01-07 05:00:50,826 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 57 [2021-01-07 05:00:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:50,827 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2021-01-07 05:00:50,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:00:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2021-01-07 05:00:50,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-07 05:00:50,827 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:50,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:51,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:00:51,028 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:51,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1346900531, now seen corresponding path program 3 times [2021-01-07 05:00:51,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:51,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773523528] [2021-01-07 05:00:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:51,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773523528] [2021-01-07 05:00:51,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925924512] [2021-01-07 05:00:51,248 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 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 [2021-01-07 05:00:51,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:00:51,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:51,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:00:51,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:51,395 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:51,396 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:51,397 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:51,414 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:51,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:51,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:51,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:51,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-01-07 05:00:51,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122030354] [2021-01-07 05:00:51,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:00:51,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:51,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:00:51,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:00:51,712 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 22 states. [2021-01-07 05:00:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:52,219 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-01-07 05:00:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:00:52,219 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 61 [2021-01-07 05:00:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:52,220 INFO L225 Difference]: With dead ends: 83 [2021-01-07 05:00:52,220 INFO L226 Difference]: Without dead ends: 79 [2021-01-07 05:00:52,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:00:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-07 05:00:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-01-07 05:00:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-07 05:00:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-01-07 05:00:52,224 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 61 [2021-01-07 05:00:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:52,224 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-01-07 05:00:52,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:00:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-01-07 05:00:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-07 05:00:52,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:52,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:52,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:00:52,432 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1929224659, now seen corresponding path program 4 times [2021-01-07 05:00:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:52,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941498407] [2021-01-07 05:00:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:52,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941498407] [2021-01-07 05:00:52,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510013810] [2021-01-07 05:00:52,724 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 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 [2021-01-07 05:00:52,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:52,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:52,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:00:52,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:52,844 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:52,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:52,847 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:52,865 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:52,867 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:52,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:53,114 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:00:53,115 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:53,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:53,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:53,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:53,692 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 24 treesize of output 18 [2021-01-07 05:00:53,694 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:53,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:53,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:00:53,741 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:53,742 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-01-07 05:00:53,744 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:53,776 INFO L625 ElimStorePlain]: treesize reduction 17, result has 62.2 percent of original size [2021-01-07 05:00:53,779 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:53,779 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:8 [2021-01-07 05:00:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:00:53,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 32 [2021-01-07 05:00:53,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201588930] [2021-01-07 05:00:53,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:00:53,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:00:53,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:00:53,839 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 32 states. [2021-01-07 05:00:55,736 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:00:56,291 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-07 05:00:56,490 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:00:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:57,694 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2021-01-07 05:00:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:00:57,695 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2021-01-07 05:00:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:57,696 INFO L225 Difference]: With dead ends: 199 [2021-01-07 05:00:57,697 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:00:57,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=674, Invalid=4296, Unknown=0, NotChecked=0, Total=4970 [2021-01-07 05:00:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:00:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-01-07 05:00:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:00:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2021-01-07 05:00:57,701 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 64 [2021-01-07 05:00:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:57,701 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-01-07 05:00:57,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:00:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2021-01-07 05:00:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-07 05:00:57,702 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:57,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:57,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:57,906 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:57,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1604493991, now seen corresponding path program 5 times [2021-01-07 05:00:57,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:57,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551008194] [2021-01-07 05:00:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:00:58,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551008194] [2021-01-07 05:00:58,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244718735] [2021-01-07 05:00:58,122 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 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 [2021-01-07 05:00:58,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-07 05:00:58,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:00:58,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:58,281 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_30|], 1=[|v_#valid_32|]} [2021-01-07 05:00:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:58,289 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:00:58,290 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:58,306 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 10 treesize of output 8 [2021-01-07 05:00:58,308 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:58,319 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,319 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:00:58,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:58,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-01-07 05:00:58,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522251064] [2021-01-07 05:00:58,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:00:58,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:58,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:00:58,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:00:58,634 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 21 states. [2021-01-07 05:00:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:59,331 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-01-07 05:00:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:59,332 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2021-01-07 05:00:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:59,333 INFO L225 Difference]: With dead ends: 100 [2021-01-07 05:00:59,334 INFO L226 Difference]: Without dead ends: 100 [2021-01-07 05:00:59,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:00:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-07 05:00:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2021-01-07 05:00:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-07 05:00:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-01-07 05:00:59,339 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 72 [2021-01-07 05:00:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:59,340 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-01-07 05:00:59,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:00:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-01-07 05:00:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-07 05:00:59,341 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:59,341 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:59,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:59,556 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1296737235, now seen corresponding path program 4 times [2021-01-07 05:00:59,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:59,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332589111] [2021-01-07 05:00:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:00:59,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332589111] [2021-01-07 05:00:59,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499872731] [2021-01-07 05:00:59,802 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 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 [2021-01-07 05:00:59,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:59,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-07 05:00:59,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:59,912 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:59,912 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:59,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:59,932 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:59,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:59,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:01:00,039 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:01:00,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:00,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:00,047 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:00,047 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:01:00,541 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:00,542 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 54 [2021-01-07 05:01:00,544 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:00,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:00,581 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:01:00,587 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:00,587 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:28 [2021-01-07 05:01:00,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:00,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:00,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:00,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:00,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:01:00,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:00,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 28 [2021-01-07 05:01:00,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13640645] [2021-01-07 05:01:00,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:01:00,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:00,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:01:00,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:01:00,792 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 29 states. [2021-01-07 05:01:02,011 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-07 05:01:02,288 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-01-07 05:01:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:02,703 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-01-07 05:01:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:01:02,704 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 76 [2021-01-07 05:01:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:02,704 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:01:02,705 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:01:02,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:01:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:01:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-01-07 05:01:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-07 05:01:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2021-01-07 05:01:02,708 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 76 [2021-01-07 05:01:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:02,709 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2021-01-07 05:01:02,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:01:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2021-01-07 05:01:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-07 05:01:02,710 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:02,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:02,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:01:02,925 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2131874765, now seen corresponding path program 6 times [2021-01-07 05:01:02,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:02,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100731524] [2021-01-07 05:01:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:01:03,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100731524] [2021-01-07 05:01:03,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746270771] [2021-01-07 05:01:03,271 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 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 [2021-01-07 05:01:03,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-07 05:01:03,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:03,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:01:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:03,430 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:03,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:01:03,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:03,446 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2021-01-07 05:01:03,448 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:03,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2021-01-07 05:01:03,730 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:01:03,731 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:03,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:03,738 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:03,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 05:01:04,584 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 25 treesize of output 19 [2021-01-07 05:01:04,586 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:04,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:04,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:01:04,637 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:04,637 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-01-07 05:01:04,642 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:04,697 INFO L625 ElimStorePlain]: treesize reduction 12, result has 75.5 percent of original size [2021-01-07 05:01:04,706 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:04,707 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:55, output treesize:8 [2021-01-07 05:01:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 41 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:01:04,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:04,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 36 [2021-01-07 05:01:04,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659578194] [2021-01-07 05:01:04,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:01:04,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:04,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:01:04,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1151, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:01:04,787 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 36 states. [2021-01-07 05:01:08,386 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-07 05:01:08,614 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-01-07 05:01:09,218 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-07 05:01:09,670 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-07 05:01:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:10,042 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2021-01-07 05:01:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-07 05:01:10,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 79 [2021-01-07 05:01:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:10,044 INFO L225 Difference]: With dead ends: 239 [2021-01-07 05:01:10,044 INFO L226 Difference]: Without dead ends: 108 [2021-01-07 05:01:10,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=761, Invalid=5881, Unknown=0, NotChecked=0, Total=6642 [2021-01-07 05:01:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-07 05:01:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2021-01-07 05:01:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-01-07 05:01:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-01-07 05:01:10,050 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 79 [2021-01-07 05:01:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:10,050 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-01-07 05:01:10,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:01:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-01-07 05:01:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-07 05:01:10,051 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:10,051 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:10,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:10,257 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash -418354157, now seen corresponding path program 7 times [2021-01-07 05:01:10,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:10,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309437179] [2021-01-07 05:01:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:10,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309437179] [2021-01-07 05:01:10,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717899190] [2021-01-07 05:01:10,521 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 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 [2021-01-07 05:01:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:01:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:10,642 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_33|], 1=[|v_#valid_33|]} [2021-01-07 05:01:10,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:10,647 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:01:10,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:10,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:10,663 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 10 treesize of output 8 [2021-01-07 05:01:10,665 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:10,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:10,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:10,676 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:01:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:11,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:11,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-01-07 05:01:11,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433926943] [2021-01-07 05:01:11,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:01:11,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:01:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:01:11,258 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 27 states. [2021-01-07 05:01:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:12,211 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-01-07 05:01:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:01:12,213 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 87 [2021-01-07 05:01:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:12,214 INFO L225 Difference]: With dead ends: 115 [2021-01-07 05:01:12,214 INFO L226 Difference]: Without dead ends: 115 [2021-01-07 05:01:12,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:01:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-07 05:01:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-01-07 05:01:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-07 05:01:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2021-01-07 05:01:12,218 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 87 [2021-01-07 05:01:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:12,219 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2021-01-07 05:01:12,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:01:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2021-01-07 05:01:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-07 05:01:12,220 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:12,220 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:12,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:01:12,434 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:12,434 INFO L82 PathProgramCache]: Analyzing trace with hash -771190887, now seen corresponding path program 5 times [2021-01-07 05:01:12,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:12,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624944633] [2021-01-07 05:01:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 15 proven. 125 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:12,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624944633] [2021-01-07 05:01:12,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87163208] [2021-01-07 05:01:12,750 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 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 [2021-01-07 05:01:12,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-07 05:01:12,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:01:12,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:12,939 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:12,940 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:01:12,941 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:12,960 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:12,962 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:12,963 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:01:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 28 proven. 112 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:13,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:13,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2021-01-07 05:01:13,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506655935] [2021-01-07 05:01:13,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:01:13,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:01:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:01:13,225 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand 22 states. [2021-01-07 05:01:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:13,859 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2021-01-07 05:01:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:01:13,860 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 91 [2021-01-07 05:01:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:13,862 INFO L225 Difference]: With dead ends: 113 [2021-01-07 05:01:13,862 INFO L226 Difference]: Without dead ends: 109 [2021-01-07 05:01:13,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:01:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-07 05:01:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-01-07 05:01:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-07 05:01:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2021-01-07 05:01:13,866 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 91 [2021-01-07 05:01:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:13,866 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2021-01-07 05:01:13,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:01:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2021-01-07 05:01:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-07 05:01:13,867 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:13,867 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:14,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:01:14,068 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:14,068 INFO L82 PathProgramCache]: Analyzing trace with hash -767633183, now seen corresponding path program 8 times [2021-01-07 05:01:14,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:14,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113957195] [2021-01-07 05:01:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 26 proven. 130 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:14,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113957195] [2021-01-07 05:01:14,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70009574] [2021-01-07 05:01:14,528 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 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 [2021-01-07 05:01:14,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:14,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:01:14,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:14,983 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:14,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:14,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:14,992 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. [2021-01-07 05:01:14,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:16,109 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:16,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 52 [2021-01-07 05:01:16,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:16,144 INFO L625 ElimStorePlain]: treesize reduction 21, result has 52.3 percent of original size [2021-01-07 05:01:16,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:16,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:8 [2021-01-07 05:01:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 6 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:01:16,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:16,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 39 [2021-01-07 05:01:16,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296410465] [2021-01-07 05:01:16,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:01:16,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:01:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1400, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:01:16,248 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 39 states. [2021-01-07 05:01:20,595 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-01-07 05:01:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:21,880 INFO L93 Difference]: Finished difference Result 279 states and 283 transitions. [2021-01-07 05:01:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-01-07 05:01:21,881 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 94 [2021-01-07 05:01:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:21,882 INFO L225 Difference]: With dead ends: 279 [2021-01-07 05:01:21,883 INFO L226 Difference]: Without dead ends: 123 [2021-01-07 05:01:21,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=567, Invalid=6075, Unknown=0, NotChecked=0, Total=6642 [2021-01-07 05:01:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-07 05:01:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2021-01-07 05:01:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-07 05:01:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2021-01-07 05:01:21,888 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 94 [2021-01-07 05:01:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:21,888 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2021-01-07 05:01:21,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:01:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2021-01-07 05:01:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-07 05:01:21,889 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:21,889 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:22,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:01:22,103 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:22,103 INFO L82 PathProgramCache]: Analyzing trace with hash 913329115, now seen corresponding path program 9 times [2021-01-07 05:01:22,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:22,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094727075] [2021-01-07 05:01:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 28 proven. 149 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:22,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094727075] [2021-01-07 05:01:22,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403962152] [2021-01-07 05:01:22,418 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:22,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:01:22,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:22,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:01:22,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:23,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:23,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2021-01-07 05:01:23,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099812372] [2021-01-07 05:01:23,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:01:23,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:01:23,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:01:23,433 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 33 states. [2021-01-07 05:01:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:24,187 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2021-01-07 05:01:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:01:24,189 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 102 [2021-01-07 05:01:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:24,190 INFO L225 Difference]: With dead ends: 130 [2021-01-07 05:01:24,190 INFO L226 Difference]: Without dead ends: 130 [2021-01-07 05:01:24,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:01:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-07 05:01:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-01-07 05:01:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-07 05:01:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2021-01-07 05:01:24,194 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 102 [2021-01-07 05:01:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:24,194 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2021-01-07 05:01:24,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:01:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2021-01-07 05:01:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-07 05:01:24,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:24,196 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:24,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:01:24,405 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:24,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:24,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1419555999, now seen corresponding path program 6 times [2021-01-07 05:01:24,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:24,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952366243] [2021-01-07 05:01:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 28 proven. 173 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:24,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952366243] [2021-01-07 05:01:24,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188855349] [2021-01-07 05:01:24,790 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:25,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-07 05:01:25,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:25,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-07 05:01:25,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:25,107 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:25,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:01:25,110 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:25,133 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:25,135 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:25,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:01:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 45 proven. 156 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:25,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:25,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-01-07 05:01:25,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388922331] [2021-01-07 05:01:25,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:01:25,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:01:25,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:01:25,857 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand 34 states. [2021-01-07 05:01:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:26,913 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-01-07 05:01:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:01:26,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 106 [2021-01-07 05:01:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:26,918 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:01:26,918 INFO L226 Difference]: Without dead ends: 124 [2021-01-07 05:01:26,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=349, Invalid=1373, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:01:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-07 05:01:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-01-07 05:01:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-01-07 05:01:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2021-01-07 05:01:26,921 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 106 [2021-01-07 05:01:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:26,922 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2021-01-07 05:01:26,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:01:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2021-01-07 05:01:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-07 05:01:26,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:26,923 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:27,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:01:27,128 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:27,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1744754663, now seen corresponding path program 10 times [2021-01-07 05:01:27,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:27,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189026760] [2021-01-07 05:01:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 31 proven. 189 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:27,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189026760] [2021-01-07 05:01:27,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892826371] [2021-01-07 05:01:27,684 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:27,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:01:27,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:27,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-07 05:01:27,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:27,837 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:27,837 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:01:27,839 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:27,862 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:27,864 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:27,864 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:01:28,369 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:01:28,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:28,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:28,376 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:28,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:29,316 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 24 treesize of output 18 [2021-01-07 05:01:29,318 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:29,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:29,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:01:29,363 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:29,364 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-01-07 05:01:29,367 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:29,406 INFO L625 ElimStorePlain]: treesize reduction 9, result has 76.9 percent of original size [2021-01-07 05:01:29,414 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:29,414 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:8 [2021-01-07 05:01:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 142 proven. 78 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:01:29,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:29,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26] total 44 [2021-01-07 05:01:29,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68960832] [2021-01-07 05:01:29,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-07 05:01:29,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:29,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-07 05:01:29,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:01:29,512 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 44 states. [2021-01-07 05:01:31,330 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-07 05:01:31,941 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:01:32,388 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:01:32,845 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-07 05:01:33,742 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:01:34,223 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:01:34,433 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-07 05:01:34,665 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:01:35,793 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-01-07 05:01:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:36,183 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2021-01-07 05:01:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-01-07 05:01:36,186 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 109 [2021-01-07 05:01:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:36,187 INFO L225 Difference]: With dead ends: 319 [2021-01-07 05:01:36,187 INFO L226 Difference]: Without dead ends: 138 [2021-01-07 05:01:36,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1049, Invalid=8457, Unknown=0, NotChecked=0, Total=9506 [2021-01-07 05:01:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-01-07 05:01:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2021-01-07 05:01:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-07 05:01:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2021-01-07 05:01:36,192 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 109 [2021-01-07 05:01:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:36,192 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2021-01-07 05:01:36,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-07 05:01:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2021-01-07 05:01:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-07 05:01:36,193 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:36,194 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:36,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:36,406 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1230781985, now seen corresponding path program 11 times [2021-01-07 05:01:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283029904] [2021-01-07 05:01:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 45 proven. 200 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:36,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283029904] [2021-01-07 05:01:36,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738824899] [2021-01-07 05:01:36,813 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:37,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:01:37,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:37,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-07 05:01:37,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 179 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:37,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:37,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2021-01-07 05:01:37,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606142366] [2021-01-07 05:01:37,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:01:37,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:37,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:01:37,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:01:37,609 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 29 states. [2021-01-07 05:01:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:38,723 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-01-07 05:01:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:01:38,724 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 117 [2021-01-07 05:01:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:38,725 INFO L225 Difference]: With dead ends: 145 [2021-01-07 05:01:38,726 INFO L226 Difference]: Without dead ends: 145 [2021-01-07 05:01:38,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=336, Invalid=1146, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:01:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-01-07 05:01:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2021-01-07 05:01:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-07 05:01:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 147 transitions. [2021-01-07 05:01:38,730 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 147 transitions. Word has length 117 [2021-01-07 05:01:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:38,730 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 147 transitions. [2021-01-07 05:01:38,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:01:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 147 transitions. [2021-01-07 05:01:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-07 05:01:38,735 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:38,735 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:38,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:01:38,951 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:38,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1495539557, now seen corresponding path program 7 times [2021-01-07 05:01:38,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:38,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48805523] [2021-01-07 05:01:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 45 proven. 228 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:39,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48805523] [2021-01-07 05:01:39,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544552095] [2021-01-07 05:01:39,428 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:39,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-07 05:01:39,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 66 proven. 207 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:40,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:40,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2021-01-07 05:01:40,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344130764] [2021-01-07 05:01:40,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:01:40,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:01:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:01:40,064 INFO L87 Difference]: Start difference. First operand 141 states and 147 transitions. Second operand 31 states. [2021-01-07 05:01:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:41,014 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2021-01-07 05:01:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:01:41,015 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 121 [2021-01-07 05:01:41,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:41,018 INFO L225 Difference]: With dead ends: 143 [2021-01-07 05:01:41,018 INFO L226 Difference]: Without dead ends: 139 [2021-01-07 05:01:41,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:01:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-01-07 05:01:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-01-07 05:01:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-07 05:01:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2021-01-07 05:01:41,022 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 121 [2021-01-07 05:01:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:41,023 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2021-01-07 05:01:41,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:01:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2021-01-07 05:01:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-01-07 05:01:41,023 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:41,024 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:41,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:41,239 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1923196309, now seen corresponding path program 12 times [2021-01-07 05:01:41,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:41,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906386085] [2021-01-07 05:01:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 36 proven. 259 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:41,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906386085] [2021-01-07 05:01:41,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643413085] [2021-01-07 05:01:41,949 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:42,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:01:42,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:42,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:01:42,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:42,939 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:42,940 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,947 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. [2021-01-07 05:01:42,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:44,587 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:44,588 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 52 [2021-01-07 05:01:44,590 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:44,634 INFO L625 ElimStorePlain]: treesize reduction 21, result has 52.3 percent of original size [2021-01-07 05:01:44,639 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:44,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:8 [2021-01-07 05:01:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 8 proven. 287 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:01:44,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:44,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 47 [2021-01-07 05:01:44,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359990873] [2021-01-07 05:01:44,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-07 05:01:44,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-07 05:01:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2064, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:01:44,775 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 47 states. [2021-01-07 05:01:52,095 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-01-07 05:01:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:53,596 INFO L93 Difference]: Finished difference Result 359 states and 363 transitions. [2021-01-07 05:01:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-01-07 05:01:53,597 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 124 [2021-01-07 05:01:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:53,598 INFO L225 Difference]: With dead ends: 359 [2021-01-07 05:01:53,599 INFO L226 Difference]: Without dead ends: 153 [2021-01-07 05:01:53,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=667, Invalid=8839, Unknown=0, NotChecked=0, Total=9506 [2021-01-07 05:01:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-07 05:01:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2021-01-07 05:01:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-07 05:01:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2021-01-07 05:01:53,603 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 124 [2021-01-07 05:01:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:53,603 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2021-01-07 05:01:53,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-07 05:01:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2021-01-07 05:01:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-01-07 05:01:53,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:53,604 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:53,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-01-07 05:01:53,805 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:53,805 INFO L82 PathProgramCache]: Analyzing trace with hash -604772593, now seen corresponding path program 13 times [2021-01-07 05:01:53,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:53,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115268706] [2021-01-07 05:01:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 66 proven. 258 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:01:54,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115268706] [2021-01-07 05:01:54,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637986864] [2021-01-07 05:01:54,309 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:01:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:54,462 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_37|], 1=[|v_#valid_34|]} [2021-01-07 05:01:54,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:54,467 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:01:54,468 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,478 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,484 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 10 treesize of output 8 [2021-01-07 05:01:54,486 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,500 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:01:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 91 proven. 233 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:01:55,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:55,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-01-07 05:01:55,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942539315] [2021-01-07 05:01:55,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:01:55,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:55,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:01:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:01:55,623 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand 39 states. [2021-01-07 05:01:57,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:57,535 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2021-01-07 05:01:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:01:57,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 132 [2021-01-07 05:01:57,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:57,538 INFO L225 Difference]: With dead ends: 160 [2021-01-07 05:01:57,538 INFO L226 Difference]: Without dead ends: 160 [2021-01-07 05:01:57,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=533, Invalid=2659, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:01:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-07 05:01:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-01-07 05:01:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-01-07 05:01:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2021-01-07 05:01:57,543 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 132 [2021-01-07 05:01:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:57,543 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2021-01-07 05:01:57,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:01:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2021-01-07 05:01:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-01-07 05:01:57,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:57,544 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:57,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:57,758 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1652436117, now seen corresponding path program 8 times [2021-01-07 05:01:57,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:57,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894824281] [2021-01-07 05:01:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 66 proven. 290 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:01:58,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894824281] [2021-01-07 05:01:58,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092446127] [2021-01-07 05:01:58,325 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:58,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:58,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:58,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:01:58,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:58,498 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,498 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:01:58,502 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,524 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:58,526 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:01:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 91 proven. 265 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:01:59,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:59,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2021-01-07 05:01:59,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659815089] [2021-01-07 05:01:59,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:01:59,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:01:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1437, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:01:59,478 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand 41 states. [2021-01-07 05:02:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:00,949 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2021-01-07 05:02:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:02:00,950 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 136 [2021-01-07 05:02:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:00,951 INFO L225 Difference]: With dead ends: 158 [2021-01-07 05:02:00,952 INFO L226 Difference]: Without dead ends: 154 [2021-01-07 05:02:00,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=450, Invalid=2100, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:02:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-07 05:02:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-01-07 05:02:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-07 05:02:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2021-01-07 05:02:00,955 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 136 [2021-01-07 05:02:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:00,955 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2021-01-07 05:02:00,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:02:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2021-01-07 05:02:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-07 05:02:00,955 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:00,956 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:01,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-07 05:02:01,157 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:01,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1190770075, now seen corresponding path program 14 times [2021-01-07 05:02:01,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:01,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984172757] [2021-01-07 05:02:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:02:02,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984172757] [2021-01-07 05:02:02,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724969919] [2021-01-07 05:02:02,017 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:02,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:02:02,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:02,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-07 05:02:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:02,805 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:02:02,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:02,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:02,815 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. [2021-01-07 05:02:02,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:02:04,722 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:04,723 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 52 [2021-01-07 05:02:04,725 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,758 INFO L625 ElimStorePlain]: treesize reduction 17, result has 61.4 percent of original size [2021-01-07 05:02:04,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,761 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:8 [2021-01-07 05:02:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 9 proven. 372 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:02:04,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:04,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 51 [2021-01-07 05:02:04,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437926907] [2021-01-07 05:02:04,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-07 05:02:04,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:04,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-07 05:02:04,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2444, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:02:04,915 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 51 states. [2021-01-07 05:02:13,573 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-07 05:02:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:15,243 INFO L93 Difference]: Finished difference Result 399 states and 403 transitions. [2021-01-07 05:02:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-01-07 05:02:15,244 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 139 [2021-01-07 05:02:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:15,245 INFO L225 Difference]: With dead ends: 399 [2021-01-07 05:02:15,245 INFO L226 Difference]: Without dead ends: 168 [2021-01-07 05:02:15,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=717, Invalid=10413, Unknown=0, NotChecked=0, Total=11130 [2021-01-07 05:02:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-01-07 05:02:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2021-01-07 05:02:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-07 05:02:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2021-01-07 05:02:15,251 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 139 [2021-01-07 05:02:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:15,252 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2021-01-07 05:02:15,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-07 05:02:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2021-01-07 05:02:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-01-07 05:02:15,253 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:15,253 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:15,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:15,465 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:15,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2139702699, now seen corresponding path program 15 times [2021-01-07 05:02:15,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:15,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553437237] [2021-01-07 05:02:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 91 proven. 323 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553437237] [2021-01-07 05:02:16,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494234729] [2021-01-07 05:02:16,128 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:17,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-07 05:02:17,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:17,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-07 05:02:17,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:17,504 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_39|], 1=[|v_#valid_35|]} [2021-01-07 05:02:17,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:17,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:02:17,510 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,529 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 10 treesize of output 8 [2021-01-07 05:02:17,531 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,544 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,545 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:02:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 120 proven. 294 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:18,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:18,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-01-07 05:02:18,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597618099] [2021-01-07 05:02:18,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-07 05:02:18,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-07 05:02:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1695, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:02:18,963 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand 44 states. [2021-01-07 05:02:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:21,521 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2021-01-07 05:02:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:02:21,522 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 147 [2021-01-07 05:02:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:21,523 INFO L225 Difference]: With dead ends: 175 [2021-01-07 05:02:21,523 INFO L226 Difference]: Without dead ends: 175 [2021-01-07 05:02:21,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=738, Invalid=3294, Unknown=0, NotChecked=0, Total=4032 [2021-01-07 05:02:21,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-07 05:02:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-01-07 05:02:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-01-07 05:02:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 177 transitions. [2021-01-07 05:02:21,529 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 177 transitions. Word has length 147 [2021-01-07 05:02:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:21,529 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 177 transitions. [2021-01-07 05:02:21,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-07 05:02:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 177 transitions. [2021-01-07 05:02:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-01-07 05:02:21,530 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:21,531 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:21,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-07 05:02:21,745 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1758125361, now seen corresponding path program 9 times [2021-01-07 05:02:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:21,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228188875] [2021-01-07 05:02:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 91 proven. 359 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:22,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228188875] [2021-01-07 05:02:22,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032721391] [2021-01-07 05:02:22,376 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:23,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-07 05:02:23,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:23,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:02:23,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:23,399 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:23,400 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:02:23,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:23,426 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:02:23,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:23,428 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:02:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 120 proven. 330 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:24,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:24,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-01-07 05:02:24,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611120400] [2021-01-07 05:02:24,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:02:24,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:24,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:02:24,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1792, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:02:24,767 INFO L87 Difference]: Start difference. First operand 171 states and 177 transitions. Second operand 46 states. [2021-01-07 05:02:26,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:26,780 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2021-01-07 05:02:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:02:26,782 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 151 [2021-01-07 05:02:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:26,784 INFO L225 Difference]: With dead ends: 173 [2021-01-07 05:02:26,784 INFO L226 Difference]: Without dead ends: 169 [2021-01-07 05:02:26,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=625, Invalid=2567, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:02:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-01-07 05:02:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-01-07 05:02:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-01-07 05:02:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2021-01-07 05:02:26,789 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 151 [2021-01-07 05:02:26,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:26,789 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2021-01-07 05:02:26,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:02:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2021-01-07 05:02:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-01-07 05:02:26,790 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:26,790 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:26,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:27,000 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash -813530039, now seen corresponding path program 16 times [2021-01-07 05:02:27,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:27,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438174917] [2021-01-07 05:02:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 46 proven. 432 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438174917] [2021-01-07 05:02:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747677680] [2021-01-07 05:02:27,969 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:28,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:02:28,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:28,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-07 05:02:28,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:28,142 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:28,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:02:28,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:28,165 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:02:28,168 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:28,169 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:02:29,099 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:02:29,100 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:29,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:29,109 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:29,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:02:30,720 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 24 treesize of output 18 [2021-01-07 05:02:30,722 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:30,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:30,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:02:30,774 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:30,775 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-01-07 05:02:30,778 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:30,824 INFO L625 ElimStorePlain]: treesize reduction 12, result has 71.4 percent of original size [2021-01-07 05:02:30,828 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:30,829 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:8 [2021-01-07 05:02:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 307 proven. 171 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:02:31,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:31,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 32] total 56 [2021-01-07 05:02:31,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192967145] [2021-01-07 05:02:31,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-01-07 05:02:31,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:31,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-01-07 05:02:31,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2815, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:02:31,004 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 56 states. [2021-01-07 05:02:34,091 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-07 05:02:34,854 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:35,395 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:35,933 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:36,491 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:37,047 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:37,606 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:38,221 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:38,835 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:02:39,509 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:02:39,753 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-01-07 05:02:40,041 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:02:40,827 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-01-07 05:02:41,474 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-01-07 05:02:41,701 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-01-07 05:02:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:42,012 INFO L93 Difference]: Finished difference Result 439 states and 443 transitions. [2021-01-07 05:02:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-01-07 05:02:42,013 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 154 [2021-01-07 05:02:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:42,015 INFO L225 Difference]: With dead ends: 439 [2021-01-07 05:02:42,015 INFO L226 Difference]: Without dead ends: 183 [2021-01-07 05:02:42,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3121 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1496, Invalid=14004, Unknown=0, NotChecked=0, Total=15500 [2021-01-07 05:02:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-01-07 05:02:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2021-01-07 05:02:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-07 05:02:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2021-01-07 05:02:42,021 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 154 [2021-01-07 05:02:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:42,021 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2021-01-07 05:02:42,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-01-07 05:02:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2021-01-07 05:02:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-01-07 05:02:42,022 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:42,022 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:42,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-07 05:02:42,238 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash -160615357, now seen corresponding path program 17 times [2021-01-07 05:02:42,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:42,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992195918] [2021-01-07 05:02:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 120 proven. 395 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:02:42,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992195918] [2021-01-07 05:02:42,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448388644] [2021-01-07 05:02:42,980 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:43,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-07 05:02:43,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:43,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:02:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 153 proven. 362 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:02:44,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:44,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 37 [2021-01-07 05:02:44,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104618099] [2021-01-07 05:02:44,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:02:44,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:44,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:02:44,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:02:44,749 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 38 states. [2021-01-07 05:02:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:46,771 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2021-01-07 05:02:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:02:46,772 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 162 [2021-01-07 05:02:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:46,774 INFO L225 Difference]: With dead ends: 190 [2021-01-07 05:02:46,774 INFO L226 Difference]: Without dead ends: 190 [2021-01-07 05:02:46,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=570, Invalid=1980, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:02:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-07 05:02:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2021-01-07 05:02:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-01-07 05:02:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 192 transitions. [2021-01-07 05:02:46,779 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 192 transitions. Word has length 162 [2021-01-07 05:02:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:46,780 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 192 transitions. [2021-01-07 05:02:46,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:02:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 192 transitions. [2021-01-07 05:02:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-01-07 05:02:46,781 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:46,781 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:46,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-07 05:02:46,997 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash -664420407, now seen corresponding path program 10 times [2021-01-07 05:02:46,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:46,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057567846] [2021-01-07 05:02:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 120 proven. 435 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:02:47,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057567846] [2021-01-07 05:02:47,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122805443] [2021-01-07 05:02:47,872 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:48,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:02:48,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 77 conjunts are in the unsatisfiable core [2021-01-07 05:02:48,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:48,087 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:48,087 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:02:48,089 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,116 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:02:48,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:02:48,394 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:02:48,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:48,406 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:02:50,070 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:50,070 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 54 [2021-01-07 05:02:50,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:50,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:50,122 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:02:50,127 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:50,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:28 [2021-01-07 05:02:50,241 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:50,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:50,245 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:50,245 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:50,246 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 162 proven. 393 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:02:50,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:50,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 46 [2021-01-07 05:02:50,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434398071] [2021-01-07 05:02:50,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-07 05:02:50,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:50,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-07 05:02:50,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:02:50,572 INFO L87 Difference]: Start difference. First operand 186 states and 192 transitions. Second operand 47 states. [2021-01-07 05:02:54,814 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-07 05:02:55,036 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-01-07 05:02:55,296 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-01-07 05:02:55,573 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-01-07 05:02:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:56,167 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2021-01-07 05:02:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:02:56,169 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 166 [2021-01-07 05:02:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:56,170 INFO L225 Difference]: With dead ends: 188 [2021-01-07 05:02:56,171 INFO L226 Difference]: Without dead ends: 184 [2021-01-07 05:02:56,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=627, Invalid=3795, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:02:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-01-07 05:02:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-01-07 05:02:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2021-01-07 05:02:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2021-01-07 05:02:56,176 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 166 [2021-01-07 05:02:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:56,176 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2021-01-07 05:02:56,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-07 05:02:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2021-01-07 05:02:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-01-07 05:02:56,177 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:56,178 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:56,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-07 05:02:56,392 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1755937457, now seen corresponding path program 18 times [2021-01-07 05:02:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:56,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388205732] [2021-01-07 05:02:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 51 proven. 535 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:02:57,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388205732] [2021-01-07 05:02:57,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752146654] [2021-01-07 05:02:57,822 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:00,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-01-07 05:03:00,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:00,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-07 05:03:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:00,469 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_43|], 1=[|v_#valid_36|]} [2021-01-07 05:03:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:03:00,476 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:03:00,477 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:00,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:00,498 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 10 treesize of output 8 [2021-01-07 05:03:00,500 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:00,513 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:00,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:00,516 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2021-01-07 05:03:01,934 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:03:01,937 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:01,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:01,950 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:01,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:03:04,814 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 25 treesize of output 19 [2021-01-07 05:03:04,817 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:04,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:03:04,890 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,891 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-01-07 05:03:04,894 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,963 INFO L625 ElimStorePlain]: treesize reduction 16, result has 67.3 percent of original size [2021-01-07 05:03:04,968 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,968 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:55, output treesize:8 [2021-01-07 05:03:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 376 proven. 210 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:03:05,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:05,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33] total 59 [2021-01-07 05:03:05,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949168812] [2021-01-07 05:03:05,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-07 05:03:05,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-07 05:03:05,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3140, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:03:05,218 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 59 states. [2021-01-07 05:03:09,733 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:03:10,805 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:11,549 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:12,311 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:13,085 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:13,871 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:03:14,698 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:15,496 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:16,278 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:17,076 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:03:17,873 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:03:18,193 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-07 05:03:18,565 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-07 05:03:19,647 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-01-07 05:03:19,895 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-01-07 05:03:20,166 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-07 05:03:20,460 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-01-07 05:03:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:21,064 INFO L93 Difference]: Finished difference Result 479 states and 483 transitions. [2021-01-07 05:03:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-01-07 05:03:21,066 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 169 [2021-01-07 05:03:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:21,068 INFO L225 Difference]: With dead ends: 479 [2021-01-07 05:03:21,068 INFO L226 Difference]: Without dead ends: 198 [2021-01-07 05:03:21,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1614, Invalid=15942, Unknown=0, NotChecked=0, Total=17556 [2021-01-07 05:03:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-01-07 05:03:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2021-01-07 05:03:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-01-07 05:03:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 195 transitions. [2021-01-07 05:03:21,074 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 195 transitions. Word has length 169 [2021-01-07 05:03:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:21,074 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 195 transitions. [2021-01-07 05:03:21,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2021-01-07 05:03:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 195 transitions. [2021-01-07 05:03:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-01-07 05:03:21,075 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:21,076 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:21,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-01-07 05:03:21,290 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1772013705, now seen corresponding path program 19 times [2021-01-07 05:03:21,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:21,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115637681] [2021-01-07 05:03:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 153 proven. 474 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:22,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115637681] [2021-01-07 05:03:22,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122659539] [2021-01-07 05:03:22,227 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:22,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-07 05:03:22,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:22,428 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_44|], 1=[|v_#valid_37|]} [2021-01-07 05:03:22,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:03:22,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:03:22,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:22,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:22,457 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 10 treesize of output 8 [2021-01-07 05:03:22,459 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:22,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:22,476 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:22,476 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:03:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 190 proven. 437 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:24,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:24,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-01-07 05:03:24,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930636227] [2021-01-07 05:03:24,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-07 05:03:24,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:24,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-07 05:03:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2338, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:03:24,639 INFO L87 Difference]: Start difference. First operand 192 states and 195 transitions. Second operand 51 states. [2021-01-07 05:03:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:29,356 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2021-01-07 05:03:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:03:29,358 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2021-01-07 05:03:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:29,360 INFO L225 Difference]: With dead ends: 205 [2021-01-07 05:03:29,360 INFO L226 Difference]: Without dead ends: 205 [2021-01-07 05:03:29,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=905, Invalid=4645, Unknown=0, NotChecked=0, Total=5550 [2021-01-07 05:03:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-07 05:03:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 201. [2021-01-07 05:03:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2021-01-07 05:03:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 207 transitions. [2021-01-07 05:03:29,365 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 207 transitions. Word has length 177 [2021-01-07 05:03:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:29,366 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 207 transitions. [2021-01-07 05:03:29,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-07 05:03:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 207 transitions. [2021-01-07 05:03:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-01-07 05:03:29,367 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:29,367 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:29,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:29,582 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:29,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1954739971, now seen corresponding path program 11 times [2021-01-07 05:03:29,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:29,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962047016] [2021-01-07 05:03:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 153 proven. 518 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:31,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962047016] [2021-01-07 05:03:31,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640182234] [2021-01-07 05:03:31,044 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:32,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-07 05:03:32,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:32,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 69 conjunts are in the unsatisfiable core [2021-01-07 05:03:32,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:32,365 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:32,366 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:03:32,369 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:32,410 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:03:32,415 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:32,415 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:03:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 190 proven. 481 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:34,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:34,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2021-01-07 05:03:34,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636756943] [2021-01-07 05:03:34,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:03:34,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:03:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=2436, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:03:34,842 INFO L87 Difference]: Start difference. First operand 201 states and 207 transitions. Second operand 53 states. [2021-01-07 05:03:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:39,125 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2021-01-07 05:03:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:03:39,127 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 181 [2021-01-07 05:03:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:39,129 INFO L225 Difference]: With dead ends: 203 [2021-01-07 05:03:39,129 INFO L226 Difference]: Without dead ends: 199 [2021-01-07 05:03:39,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=720, Invalid=3570, Unknown=0, NotChecked=0, Total=4290 [2021-01-07 05:03:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-01-07 05:03:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-01-07 05:03:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-07 05:03:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2021-01-07 05:03:39,135 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 181 [2021-01-07 05:03:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:39,135 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2021-01-07 05:03:39,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:03:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2021-01-07 05:03:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-01-07 05:03:39,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:39,137 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:39,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-01-07 05:03:39,346 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:39,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1803105533, now seen corresponding path program 20 times [2021-01-07 05:03:39,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:39,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539639260] [2021-01-07 05:03:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539639260] [2021-01-07 05:03:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385631006] [2021-01-07 05:03:41,111 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:41,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:03:41,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 88 conjunts are in the unsatisfiable core [2021-01-07 05:03:41,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:42,957 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:03:42,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:42,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:42,975 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. [2021-01-07 05:03:42,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:03:47,425 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:47,426 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 52 [2021-01-07 05:03:47,429 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:47,510 INFO L625 ElimStorePlain]: treesize reduction 17, result has 61.4 percent of original size [2021-01-07 05:03:47,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:47,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:8 [2021-01-07 05:03:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 12 proven. 693 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:03:47,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:47,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35] total 63 [2021-01-07 05:03:47,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357144098] [2021-01-07 05:03:47,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-07 05:03:47,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:47,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-07 05:03:47,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=3776, Unknown=0, NotChecked=0, Total=3906 [2021-01-07 05:03:47,816 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand 63 states. [2021-01-07 05:04:09,630 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:04:10,107 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-07 05:04:11,212 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-01-07 05:04:11,589 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-01-07 05:04:11,992 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-07 05:04:12,428 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-01-07 05:04:12,829 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-01-07 05:04:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:13,106 INFO L93 Difference]: Finished difference Result 519 states and 523 transitions. [2021-01-07 05:04:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-01-07 05:04:13,107 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 184 [2021-01-07 05:04:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:13,110 INFO L225 Difference]: With dead ends: 519 [2021-01-07 05:04:13,111 INFO L226 Difference]: Without dead ends: 213 [2021-01-07 05:04:13,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=867, Invalid=15903, Unknown=0, NotChecked=0, Total=16770 [2021-01-07 05:04:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-01-07 05:04:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2021-01-07 05:04:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-01-07 05:04:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2021-01-07 05:04:13,117 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 184 [2021-01-07 05:04:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:13,117 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2021-01-07 05:04:13,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2021-01-07 05:04:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2021-01-07 05:04:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-07 05:04:13,119 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:13,119 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:13,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-01-07 05:04:13,334 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:13,334 INFO L82 PathProgramCache]: Analyzing trace with hash -950275209, now seen corresponding path program 21 times [2021-01-07 05:04:13,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:13,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671684019] [2021-01-07 05:04:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat