/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/list-simple/sll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:30:21,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:30:21,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:30:21,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:30:21,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:30:21,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:30:21,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:30:21,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:30:21,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:30:21,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:30:21,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:30:21,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:30:21,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:30:21,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:30:21,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:30:21,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:30:21,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:30:21,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:30:21,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:30:21,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:30:21,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:30:21,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:30:21,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:30:21,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:30:22,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:30:22,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:30:22,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:30:22,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:30:22,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:30:22,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:30:22,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:30:22,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:30:22,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:30:22,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:30:22,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:30:22,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:30:22,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:30:22,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:30:22,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:30:22,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:30:22,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:30:22,088 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:30:22,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:30:22,090 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:30:22,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:30:22,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:30:22,091 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:30:22,091 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:30:22,091 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:30:22,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:30:22,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:30:22,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:30:22,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:30:22,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:30:22,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:30:22,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:30:22,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:30:22,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:30:22,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:30:22,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:30:22,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:30:22,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:30:22,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:30:22,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:30:22,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:30:22,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:30:22,636 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:30:22,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2020-12-23 17:30:22,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3c2ea8e4/9c8ef8f6935f4a919b5f027961e12910/FLAG21bd3ff31 [2020-12-23 17:30:23,483 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:30:23,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2020-12-23 17:30:23,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3c2ea8e4/9c8ef8f6935f4a919b5f027961e12910/FLAG21bd3ff31 [2020-12-23 17:30:23,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e3c2ea8e4/9c8ef8f6935f4a919b5f027961e12910 [2020-12-23 17:30:23,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:30:23,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:30:23,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:30:23,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:30:23,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:30:23,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:30:23" (1/1) ... [2020-12-23 17:30:23,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705ae288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:23, skipping insertion in model container [2020-12-23 17:30:23,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:30:23" (1/1) ... [2020-12-23 17:30:23,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:30:23,750 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: address: IdentifierExpression[~head,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 17:30:24,137 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2020-12-23 17:30:24,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:30:24,153 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: address: IdentifierExpression[~head,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 17:30:24,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2020-12-23 17:30:24,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:30:24,291 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:30:24,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24 WrapperNode [2020-12-23 17:30:24,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:30:24,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:30:24,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:30:24,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:30:24,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:30:24,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:30:24,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:30:24,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:30:24,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... [2020-12-23 17:30:24,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:30:24,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:30:24,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:30:24,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:30:24,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:30:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-23 17:30:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:30:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:30:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:30:25,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:30:25,058 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-23 17:30:25,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:30:25 BoogieIcfgContainer [2020-12-23 17:30:25,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:30:25,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:30:25,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:30:25,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:30:25,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:30:23" (1/3) ... [2020-12-23 17:30:25,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb54e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:30:25, skipping insertion in model container [2020-12-23 17:30:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:24" (2/3) ... [2020-12-23 17:30:25,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb54e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:30:25, skipping insertion in model container [2020-12-23 17:30:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:30:25" (3/3) ... [2020-12-23 17:30:25,070 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2020-12-23 17:30:25,077 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:30:25,083 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-12-23 17:30:25,107 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-12-23 17:30:25,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:30:25,135 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:30:25,135 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:30:25,135 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:30:25,136 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:30:25,136 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:30:25,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:30:25,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:30:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-12-23 17:30:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:30:25,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:25,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:30:25,173 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:25,181 INFO L82 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2020-12-23 17:30:25,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:25,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453045798] [2020-12-23 17:30:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:25,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453045798] [2020-12-23 17:30:25,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:25,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:30:25,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28124622] [2020-12-23 17:30:25,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:30:25,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:25,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:30:25,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:30:25,499 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-12-23 17:30:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:25,650 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-12-23 17:30:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:30:25,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-23 17:30:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:25,664 INFO L225 Difference]: With dead ends: 75 [2020-12-23 17:30:25,664 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 17:30:25,666 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 [2020-12-23 17:30:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 17:30:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2020-12-23 17:30:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:30:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-12-23 17:30:25,711 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 5 [2020-12-23 17:30:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:25,712 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-12-23 17:30:25,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:30:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-12-23 17:30:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:30:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:25,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:30:25,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:30:25,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2020-12-23 17:30:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:25,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773371179] [2020-12-23 17:30:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:25,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773371179] [2020-12-23 17:30:25,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:25,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:30:25,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791229175] [2020-12-23 17:30:25,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:30:25,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:25,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:30:25,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:30:25,831 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 3 states. [2020-12-23 17:30:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:25,902 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-12-23 17:30:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:30:25,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-23 17:30:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:25,905 INFO L225 Difference]: With dead ends: 76 [2020-12-23 17:30:25,905 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 17:30:25,906 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 [2020-12-23 17:30:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 17:30:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 44. [2020-12-23 17:30:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 17:30:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 17:30:25,914 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 5 [2020-12-23 17:30:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:25,914 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 17:30:25,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:30:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 17:30:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:30:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:25,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:25,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:30:25,916 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1808567236, now seen corresponding path program 1 times [2020-12-23 17:30:25,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:25,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869518798] [2020-12-23 17:30:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:25,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869518798] [2020-12-23 17:30:25,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:25,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:30:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242443719] [2020-12-23 17:30:25,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:30:25,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:25,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:30:25,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:30:25,961 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 3 states. [2020-12-23 17:30:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:25,988 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-12-23 17:30:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:30:25,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 17:30:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:25,990 INFO L225 Difference]: With dead ends: 55 [2020-12-23 17:30:25,990 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 17:30:25,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:30:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 17:30:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-12-23 17:30:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 17:30:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 17:30:26,005 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 7 [2020-12-23 17:30:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:26,007 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 17:30:26,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:30:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 17:30:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 17:30:26,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:26,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:26,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:30:26,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2020-12-23 17:30:26,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:26,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249981037] [2020-12-23 17:30:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:26,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249981037] [2020-12-23 17:30:26,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:26,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:30:26,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240632181] [2020-12-23 17:30:26,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:30:26,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:26,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:30:26,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:26,156 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-12-23 17:30:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:26,303 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-12-23 17:30:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:30:26,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 17:30:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:26,305 INFO L225 Difference]: With dead ends: 72 [2020-12-23 17:30:26,305 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 17:30:26,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:30:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 17:30:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 44. [2020-12-23 17:30:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 17:30:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-23 17:30:26,312 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 9 [2020-12-23 17:30:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:26,313 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-23 17:30:26,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:30:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-23 17:30:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 17:30:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:26,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:26,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:30:26,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2020-12-23 17:30:26,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:26,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575279754] [2020-12-23 17:30:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:26,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575279754] [2020-12-23 17:30:26,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:26,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:30:26,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640652972] [2020-12-23 17:30:26,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:30:26,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:26,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:30:26,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:26,461 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 5 states. [2020-12-23 17:30:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:26,609 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-23 17:30:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:30:26,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 17:30:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:26,611 INFO L225 Difference]: With dead ends: 48 [2020-12-23 17:30:26,611 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 17:30:26,612 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 [2020-12-23 17:30:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 17:30:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-12-23 17:30:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:30:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-23 17:30:26,618 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 9 [2020-12-23 17:30:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:26,618 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-23 17:30:26,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:30:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-23 17:30:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:30:26,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:26,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:26,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:30:26,620 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -718760712, now seen corresponding path program 1 times [2020-12-23 17:30:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:26,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566418383] [2020-12-23 17:30:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:26,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566418383] [2020-12-23 17:30:26,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487996767] [2020-12-23 17:30:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:26,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 17:30:26,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:26,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:26,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 17:30:26,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593365945] [2020-12-23 17:30:26,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:30:26,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:30:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:26,880 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 5 states. [2020-12-23 17:30:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:26,895 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 17:30:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:30:26,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 17:30:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:26,897 INFO L225 Difference]: With dead ends: 52 [2020-12-23 17:30:26,897 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 17:30:26,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 17:30:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 17:30:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 17:30:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-23 17:30:26,903 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 16 [2020-12-23 17:30:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:26,904 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-23 17:30:26,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:30:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-23 17:30:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:30:26,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:26,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:27,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 17:30:27,120 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307076, now seen corresponding path program 2 times [2020-12-23 17:30:27,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:27,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746071371] [2020-12-23 17:30:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746071371] [2020-12-23 17:30:27,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:27,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:30:27,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384147133] [2020-12-23 17:30:27,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:30:27,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:30:27,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:30:27,188 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 4 states. [2020-12-23 17:30:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:27,207 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-12-23 17:30:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:30:27,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-23 17:30:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:27,208 INFO L225 Difference]: With dead ends: 73 [2020-12-23 17:30:27,208 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 17:30:27,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 17:30:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2020-12-23 17:30:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 17:30:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-23 17:30:27,214 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 25 [2020-12-23 17:30:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:27,215 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-23 17:30:27,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:30:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-23 17:30:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:30:27,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:27,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:27,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:30:27,217 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307113, now seen corresponding path program 1 times [2020-12-23 17:30:27,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:27,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865864220] [2020-12-23 17:30:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 17:30:27,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865864220] [2020-12-23 17:30:27,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414686070] [2020-12-23 17:30:27,321 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 [2020-12-23 17:30:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 17:30:27,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:27,452 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:30:27,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:27,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:27,458 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:27,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 17:30:27,490 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:27,490 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:30:27,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:27,508 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-23 17:30:27,510 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:27,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-23 17:30:27,546 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:27,546 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:30:27,549 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:27,563 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-23 17:30:27,565 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:27,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-23 17:30:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:27,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:30:27,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2020-12-23 17:30:27,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871202274] [2020-12-23 17:30:27,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:30:27,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:30:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:27,587 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 4 states. [2020-12-23 17:30:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:27,660 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-12-23 17:30:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:30:27,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-23 17:30:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:27,661 INFO L225 Difference]: With dead ends: 66 [2020-12-23 17:30:27,661 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 17:30:27,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:30:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 17:30:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-12-23 17:30:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 17:30:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-12-23 17:30:27,667 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 25 [2020-12-23 17:30:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:27,667 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-12-23 17:30:27,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:30:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-12-23 17:30:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:30:27,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:27,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:27,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:27,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1731307114, now seen corresponding path program 1 times [2020-12-23 17:30:27,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:27,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291186792] [2020-12-23 17:30:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291186792] [2020-12-23 17:30:28,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162287107] [2020-12-23 17:30:28,021 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 [2020-12-23 17:30:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:28,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 17:30:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:28,157 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:30:28,162 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:28,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:28,171 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:28,172 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:30:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:28,199 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-23 17:30:28,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:28,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:28,216 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:28,217 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:22 [2020-12-23 17:30:28,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:28,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:28,358 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:28,358 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-23 17:30:28,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:28,416 INFO L625 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2020-12-23 17:30:28,420 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:28,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2020-12-23 17:30:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:28,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:28,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-23 17:30:28,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515071673] [2020-12-23 17:30:28,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:30:28,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:28,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:30:28,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:30:28,579 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 9 states. [2020-12-23 17:30:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:28,770 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-23 17:30:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:30:28,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-23 17:30:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:28,771 INFO L225 Difference]: With dead ends: 60 [2020-12-23 17:30:28,772 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 17:30:28,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:30:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 17:30:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-12-23 17:30:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 17:30:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-12-23 17:30:28,777 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 25 [2020-12-23 17:30:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:28,777 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-12-23 17:30:28,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:30:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-12-23 17:30:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:30:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:28,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:28,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:28,993 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2130912971, now seen corresponding path program 1 times [2020-12-23 17:30:28,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:28,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122815052] [2020-12-23 17:30:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:30:29,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122815052] [2020-12-23 17:30:29,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:29,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 17:30:29,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372782390] [2020-12-23 17:30:29,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:30:29,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:29,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:30:29,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:30:29,116 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 10 states. [2020-12-23 17:30:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:29,492 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-12-23 17:30:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:30:29,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 17:30:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:29,494 INFO L225 Difference]: With dead ends: 59 [2020-12-23 17:30:29,494 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 17:30:29,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:30:29,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 17:30:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-12-23 17:30:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:30:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-23 17:30:29,499 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 26 [2020-12-23 17:30:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:29,499 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-23 17:30:29,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:30:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-23 17:30:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:30:29,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:29,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:29,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:30:29,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2130912972, now seen corresponding path program 1 times [2020-12-23 17:30:29,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:29,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273944897] [2020-12-23 17:30:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:30:29,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273944897] [2020-12-23 17:30:29,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:29,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 17:30:29,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731323276] [2020-12-23 17:30:29,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:30:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:30:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:30:29,648 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-12-23 17:30:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:30,061 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-23 17:30:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:30:30,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 17:30:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:30,063 INFO L225 Difference]: With dead ends: 60 [2020-12-23 17:30:30,063 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 17:30:30,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:30:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 17:30:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-12-23 17:30:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:30:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-23 17:30:30,080 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 26 [2020-12-23 17:30:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-23 17:30:30,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:30:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-23 17:30:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:30:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:30,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:30,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:30:30,086 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:30,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1883260242, now seen corresponding path program 1 times [2020-12-23 17:30:30,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:30,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260214254] [2020-12-23 17:30:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:30:30,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260214254] [2020-12-23 17:30:30,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:30,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 17:30:30,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755432901] [2020-12-23 17:30:30,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:30:30,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:30,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:30:30,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:30:30,241 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 10 states. [2020-12-23 17:30:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:30,499 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-12-23 17:30:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:30:30,500 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 17:30:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:30,500 INFO L225 Difference]: With dead ends: 59 [2020-12-23 17:30:30,501 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 17:30:30,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:30:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 17:30:30,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-12-23 17:30:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 17:30:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-23 17:30:30,504 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 29 [2020-12-23 17:30:30,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:30,504 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-23 17:30:30,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:30:30,504 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-23 17:30:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 17:30:30,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:30,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:30,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:30:30,506 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1748474732, now seen corresponding path program 1 times [2020-12-23 17:30:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929934953] [2020-12-23 17:30:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:30:30,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929934953] [2020-12-23 17:30:30,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:30,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 17:30:30,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224806023] [2020-12-23 17:30:30,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:30:30,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:30,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:30:30,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:30:30,637 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 10 states. [2020-12-23 17:30:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:30,993 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-23 17:30:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:30:30,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-23 17:30:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:30,994 INFO L225 Difference]: With dead ends: 58 [2020-12-23 17:30:30,994 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 17:30:30,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:30:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 17:30:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-12-23 17:30:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 17:30:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-23 17:30:30,998 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 30 [2020-12-23 17:30:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:30,998 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-23 17:30:30,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:30:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-23 17:30:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:30:30,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:30,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:30,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:30:31,000 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1631858064, now seen corresponding path program 1 times [2020-12-23 17:30:31,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:31,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795798872] [2020-12-23 17:30:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:31,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795798872] [2020-12-23 17:30:31,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:31,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:30:31,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655466023] [2020-12-23 17:30:31,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:30:31,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:31,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:30:31,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:30:31,052 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 5 states. [2020-12-23 17:30:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:31,150 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-12-23 17:30:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:30:31,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-23 17:30:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:31,152 INFO L225 Difference]: With dead ends: 53 [2020-12-23 17:30:31,152 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 17:30:31,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:30:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 17:30:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 17:30:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 17:30:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-12-23 17:30:31,156 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 31 [2020-12-23 17:30:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:31,156 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-12-23 17:30:31,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:30:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-12-23 17:30:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 17:30:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:31,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:31,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 17:30:31,158 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash 952007663, now seen corresponding path program 1 times [2020-12-23 17:30:31,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:31,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162158667] [2020-12-23 17:30:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:30:31,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162158667] [2020-12-23 17:30:31,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298165628] [2020-12-23 17:30:31,328 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 [2020-12-23 17:30:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:31,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:30:31,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:31,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:31,557 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-23 17:30:31,560 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:31,567 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:31,569 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:31,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2020-12-23 17:30:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:31,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:30:31,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2020-12-23 17:30:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527166448] [2020-12-23 17:30:31,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:30:31,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:31,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:30:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-23 17:30:31,608 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 7 states. [2020-12-23 17:30:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:31,777 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 17:30:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:30:31,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-23 17:30:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:31,778 INFO L225 Difference]: With dead ends: 52 [2020-12-23 17:30:31,778 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 17:30:31,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-12-23 17:30:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 17:30:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 17:30:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 17:30:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-23 17:30:31,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 32 [2020-12-23 17:30:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:31,782 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-23 17:30:31,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:30:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-23 17:30:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:30:31,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:31,786 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-12-23 17:30:32,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:32,001 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1591269939, now seen corresponding path program 1 times [2020-12-23 17:30:32,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:32,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782329930] [2020-12-23 17:30:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:32,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782329930] [2020-12-23 17:30:32,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:30:32,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:30:32,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984500428] [2020-12-23 17:30:32,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:30:32,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:32,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:30:32,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:30:32,069 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 4 states. [2020-12-23 17:30:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:32,111 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-12-23 17:30:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:30:32,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-23 17:30:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:32,112 INFO L225 Difference]: With dead ends: 50 [2020-12-23 17:30:32,112 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 17:30:32,113 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 [2020-12-23 17:30:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 17:30:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 17:30:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:30:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-23 17:30:32,115 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 35 [2020-12-23 17:30:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:32,116 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-23 17:30:32,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:30:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-23 17:30:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:30:32,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:32,121 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] [2020-12-23 17:30:32,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:30:32,122 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2084729020, now seen corresponding path program 1 times [2020-12-23 17:30:32,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:32,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038085356] [2020-12-23 17:30:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:33,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038085356] [2020-12-23 17:30:33,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890332866] [2020-12-23 17:30:33,071 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:33,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-23 17:30:33,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:33,238 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:30:33,240 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:33,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:33,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:33,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:30:33,418 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:33,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:30:33,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:30:33,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:33,440 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:33,441 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:33,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-12-23 17:30:33,705 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:30:33,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:33,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:33,722 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:33,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:36 [2020-12-23 17:30:34,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 [2020-12-23 17:30:34,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:34,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:34,654 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:34,654 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:81 [2020-12-23 17:30:34,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:34,961 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:34,962 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2020-12-23 17:30:34,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:35,006 INFO L625 ElimStorePlain]: treesize reduction 18, result has 75.0 percent of original size [2020-12-23 17:30:35,009 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:35,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:54 [2020-12-23 17:30:35,148 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:35,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:35,162 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:35,171 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:35,172 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2020-12-23 17:30:35,182 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:35,217 INFO L625 ElimStorePlain]: treesize reduction 24, result has 64.2 percent of original size [2020-12-23 17:30:35,224 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:35,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:43 [2020-12-23 17:30:35,507 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:35,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:35,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:35,512 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:35,514 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:35,514 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 15 [2020-12-23 17:30:35,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:35,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:35,538 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:35,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:53, output treesize:11 [2020-12-23 17:30:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:35,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:35,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2020-12-23 17:30:35,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695669675] [2020-12-23 17:30:35,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-23 17:30:35,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-23 17:30:35,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 17:30:35,625 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 47 states. [2020-12-23 17:30:36,494 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-23 17:30:37,106 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 17:30:37,410 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-12-23 17:30:37,689 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 17:30:38,058 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-23 17:30:38,411 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-12-23 17:30:38,597 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 17:30:38,886 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-12-23 17:30:39,163 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-12-23 17:30:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:40,119 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-12-23 17:30:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 17:30:40,119 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 36 [2020-12-23 17:30:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:40,120 INFO L225 Difference]: With dead ends: 75 [2020-12-23 17:30:40,120 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 17:30:40,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=843, Invalid=5009, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 17:30:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 17:30:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-12-23 17:30:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 17:30:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-12-23 17:30:40,126 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 36 [2020-12-23 17:30:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:40,126 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-12-23 17:30:40,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-23 17:30:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-12-23 17:30:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:30:40,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:40,127 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] [2020-12-23 17:30:40,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 17:30:40,341 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2084729021, now seen corresponding path program 1 times [2020-12-23 17:30:40,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:40,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075615524] [2020-12-23 17:30:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:41,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075615524] [2020-12-23 17:30:41,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264980328] [2020-12-23 17:30:41,254 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 [2020-12-23 17:30:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:41,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 75 conjunts are in the unsatisfiable core [2020-12-23 17:30:41,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:41,419 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:30:41,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:41,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:41,425 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:41,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:30:41,753 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:41,754 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 33 [2020-12-23 17:30:41,756 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:41,788 INFO L625 ElimStorePlain]: treesize reduction 14, result has 64.1 percent of original size [2020-12-23 17:30:41,789 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:41,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:25 [2020-12-23 17:30:42,074 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 13 treesize of output 9 [2020-12-23 17:30:42,075 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:42,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:42,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:30:42,103 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:42,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:42,126 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:42,126 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:54, output treesize:46 [2020-12-23 17:30:43,582 INFO L443 ElimStorePlain]: Different costs {12=[|v_#memory_$Pointer$.offset_15|], 20=[|v_#memory_$Pointer$.base_17|]} [2020-12-23 17:30:43,588 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:43,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:43,635 INFO L348 Elim1Store]: treesize reduction 36, result has 51.4 percent of original size [2020-12-23 17:30:43,636 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 95 [2020-12-23 17:30:43,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:43,722 INFO L625 ElimStorePlain]: treesize reduction 50, result has 67.1 percent of original size [2020-12-23 17:30:43,729 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:43,733 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:43,741 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:43,742 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 89 [2020-12-23 17:30:43,749 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:43,813 INFO L625 ElimStorePlain]: treesize reduction 24, result has 75.0 percent of original size [2020-12-23 17:30:43,819 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:43,819 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:125, output treesize:72 [2020-12-23 17:30:44,140 INFO L443 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.base|], 12=[|#memory_$Pointer$.offset|]} [2020-12-23 17:30:44,147 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:44,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:44,152 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:44,152 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 12 [2020-12-23 17:30:44,153 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:44,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:44,186 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:44,188 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:44,192 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:44,193 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 18 [2020-12-23 17:30:44,194 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:44,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:44,219 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:44,220 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:89, output treesize:19 [2020-12-23 17:30:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:44,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:44,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 45 [2020-12-23 17:30:44,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664468716] [2020-12-23 17:30:44,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-23 17:30:44,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-23 17:30:44,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1922, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 17:30:44,332 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 46 states. [2020-12-23 17:30:45,548 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-23 17:30:45,981 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-12-23 17:30:46,305 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2020-12-23 17:30:46,706 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 95 [2020-12-23 17:30:47,109 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2020-12-23 17:30:47,546 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 116 [2020-12-23 17:30:47,958 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 109 [2020-12-23 17:30:48,415 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2020-12-23 17:30:48,835 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2020-12-23 17:30:49,242 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2020-12-23 17:30:49,659 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2020-12-23 17:30:50,107 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 118 [2020-12-23 17:30:50,556 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 123 [2020-12-23 17:30:51,187 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 130 [2020-12-23 17:30:51,656 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-12-23 17:30:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:51,936 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-23 17:30:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 17:30:51,937 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 36 [2020-12-23 17:30:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:51,938 INFO L225 Difference]: With dead ends: 92 [2020-12-23 17:30:51,938 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 17:30:51,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1002, Invalid=4110, Unknown=0, NotChecked=0, Total=5112 [2020-12-23 17:30:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 17:30:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-23 17:30:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 17:30:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-12-23 17:30:51,943 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 36 [2020-12-23 17:30:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:51,944 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-12-23 17:30:51,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-23 17:30:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-12-23 17:30:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 17:30:51,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:51,944 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-12-23 17:30:52,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 17:30:52,146 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 202055510, now seen corresponding path program 1 times [2020-12-23 17:30:52,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:52,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729910464] [2020-12-23 17:30:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:52,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729910464] [2020-12-23 17:30:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407870914] [2020-12-23 17:30:52,195 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 [2020-12-23 17:30:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:52,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 17:30:52,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:30:52,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:52,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 17:30:52,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285655307] [2020-12-23 17:30:52,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:30:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:30:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:30:52,331 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 6 states. [2020-12-23 17:30:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:52,361 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-12-23 17:30:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:30:52,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-23 17:30:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:52,362 INFO L225 Difference]: With dead ends: 56 [2020-12-23 17:30:52,362 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 17:30:52,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:30:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 17:30:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 17:30:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 17:30:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-23 17:30:52,364 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 37 [2020-12-23 17:30:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:52,365 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-23 17:30:52,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:30:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-23 17:30:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 17:30:52,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:52,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:52,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:52,580 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash 935157533, now seen corresponding path program 1 times [2020-12-23 17:30:52,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:52,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657594843] [2020-12-23 17:30:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:53,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657594843] [2020-12-23 17:30:53,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014140458] [2020-12-23 17:30:53,224 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 [2020-12-23 17:30:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:53,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-23 17:30:53,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:30:53,823 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 13 treesize of output 9 [2020-12-23 17:30:53,824 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:53,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:53,839 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:53,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:28 [2020-12-23 17:30:54,238 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2020-12-23 17:30:54,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:54,281 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.2 percent of original size [2020-12-23 17:30:54,283 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:54,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:41 [2020-12-23 17:30:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:54,885 INFO L348 Elim1Store]: treesize reduction 24, result has 55.6 percent of original size [2020-12-23 17:30:54,885 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 60 [2020-12-23 17:30:54,888 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:54,916 INFO L625 ElimStorePlain]: treesize reduction 34, result has 53.4 percent of original size [2020-12-23 17:30:54,919 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:30:54,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:39 [2020-12-23 17:30:55,172 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:30:55,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:30:55,175 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:55,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 16 [2020-12-23 17:30:55,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:30:55,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:30:55,192 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:30:55,192 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:7 [2020-12-23 17:30:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:55,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:30:55,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 43 [2020-12-23 17:30:55,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032596533] [2020-12-23 17:30:55,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-23 17:30:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:30:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-23 17:30:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 17:30:55,237 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 44 states. [2020-12-23 17:30:56,301 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 17:30:56,481 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 17:30:56,692 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-23 17:30:56,932 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-23 17:30:57,159 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-12-23 17:30:57,389 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-12-23 17:30:57,606 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 17:30:57,809 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-23 17:30:58,029 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 17:30:58,251 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-23 17:30:58,507 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 17:30:58,798 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 17:30:58,934 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 17:30:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:30:59,128 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-12-23 17:30:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:30:59,128 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 39 [2020-12-23 17:30:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:30:59,129 INFO L225 Difference]: With dead ends: 83 [2020-12-23 17:30:59,129 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 17:30:59,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=959, Invalid=3597, Unknown=0, NotChecked=0, Total=4556 [2020-12-23 17:30:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 17:30:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-12-23 17:30:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 17:30:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-12-23 17:30:59,133 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 39 [2020-12-23 17:30:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:30:59,133 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-12-23 17:30:59,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-23 17:30:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-12-23 17:30:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 17:30:59,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:30:59,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:30:59,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:30:59,338 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:30:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:30:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1074887459, now seen corresponding path program 1 times [2020-12-23 17:30:59,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:30:59,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763791277] [2020-12-23 17:30:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:30:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:30:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:30:59,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763791277] [2020-12-23 17:30:59,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572918597] [2020-12-23 17:30:59,955 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:31:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:31:00,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 17:31:00,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:31:00,092 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:31:00,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:00,102 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:00,104 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:31:00,104 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:31:00,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:00,158 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-23 17:31:00,160 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:00,173 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:00,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:00,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2020-12-23 17:31:00,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:00,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:00,502 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:00,503 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-23 17:31:00,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:00,550 INFO L625 ElimStorePlain]: treesize reduction 14, result has 70.8 percent of original size [2020-12-23 17:31:00,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:00,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:34 [2020-12-23 17:31:00,965 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 13 treesize of output 9 [2020-12-23 17:31:00,966 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:00,993 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:00,997 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:00,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:50, output treesize:43 [2020-12-23 17:31:01,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:01,788 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:01,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:01,799 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:01,800 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2020-12-23 17:31:01,802 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:01,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:01,847 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:01,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:92, output treesize:62 [2020-12-23 17:31:02,120 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-12-23 17:31:02,122 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:02,154 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:02,156 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:02,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:58 [2020-12-23 17:31:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:02,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:02,470 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:02,472 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:02,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41 [2020-12-23 17:31:02,476 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:02,524 INFO L625 ElimStorePlain]: treesize reduction 15, result has 75.8 percent of original size [2020-12-23 17:31:02,528 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:02,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:38 [2020-12-23 17:31:02,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:02,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-12-23 17:31:02,774 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:02,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:02,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:31:02,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:3 [2020-12-23 17:31:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:31:02,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:31:02,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 42 [2020-12-23 17:31:02,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749457961] [2020-12-23 17:31:02,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 17:31:02,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:31:02,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 17:31:02,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 17:31:02,831 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 43 states. [2020-12-23 17:31:04,885 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-23 17:31:05,118 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 17:31:05,334 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-23 17:31:05,620 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-23 17:31:06,017 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-12-23 17:31:06,551 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-12-23 17:31:07,088 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-12-23 17:31:07,630 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-12-23 17:31:08,164 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-12-23 17:31:08,692 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-23 17:31:09,240 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-23 17:31:11,661 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-12-23 17:31:13,815 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-12-23 17:31:14,404 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-12-23 17:31:14,945 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-12-23 17:31:15,702 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-12-23 17:31:16,092 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-12-23 17:31:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:31:16,554 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-12-23 17:31:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 17:31:16,555 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 40 [2020-12-23 17:31:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:31:16,556 INFO L225 Difference]: With dead ends: 87 [2020-12-23 17:31:16,556 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 17:31:16,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1101, Invalid=4011, Unknown=0, NotChecked=0, Total=5112 [2020-12-23 17:31:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 17:31:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-12-23 17:31:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 17:31:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-12-23 17:31:16,560 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 40 [2020-12-23 17:31:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:31:16,561 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-12-23 17:31:16,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 17:31:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-12-23 17:31:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:31:16,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:31:16,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 17:31:16,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:31:16,773 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:31:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:31:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1727610515, now seen corresponding path program 2 times [2020-12-23 17:31:16,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:31:16,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676460201] [2020-12-23 17:31:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:31:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:31:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:31:16,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676460201] [2020-12-23 17:31:16,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:31:16,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:31:16,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496132634] [2020-12-23 17:31:16,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:31:16,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:31:16,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:31:16,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:31:16,832 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 6 states. [2020-12-23 17:31:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:31:16,870 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 17:31:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:31:16,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-12-23 17:31:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:31:16,872 INFO L225 Difference]: With dead ends: 50 [2020-12-23 17:31:16,872 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 17:31:16,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:31:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 17:31:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 17:31:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:31:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-23 17:31:16,875 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 46 [2020-12-23 17:31:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:31:16,875 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-23 17:31:16,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:31:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-23 17:31:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 17:31:16,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:31:16,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:31:16,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 17:31:16,876 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:31:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:31:16,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2016353083, now seen corresponding path program 2 times [2020-12-23 17:31:16,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:31:16,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289822028] [2020-12-23 17:31:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:31:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:31:17,730 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-23 17:31:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:31:19,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289822028] [2020-12-23 17:31:19,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309876416] [2020-12-23 17:31:19,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:31:19,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:31:19,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:31:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 123 conjunts are in the unsatisfiable core [2020-12-23 17:31:19,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:31:19,211 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 17:31:19,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-12-23 17:31:19,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:19,231 INFO L625 ElimStorePlain]: treesize reduction 8, result has 70.4 percent of original size [2020-12-23 17:31:19,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:19,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2020-12-23 17:31:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:19,368 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:19,368 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 44 [2020-12-23 17:31:19,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:19,416 INFO L625 ElimStorePlain]: treesize reduction 18, result has 60.9 percent of original size [2020-12-23 17:31:19,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:19,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:28 [2020-12-23 17:31:19,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:19,550 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:19,550 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2020-12-23 17:31:19,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:19,593 INFO L625 ElimStorePlain]: treesize reduction 18, result has 63.3 percent of original size [2020-12-23 17:31:19,594 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:31:19,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:31 [2020-12-23 17:31:20,027 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 13 treesize of output 9 [2020-12-23 17:31:20,027 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:20,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:20,057 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 13 treesize of output 9 [2020-12-23 17:31:20,058 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:20,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:20,084 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:20,084 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:46 [2020-12-23 17:31:20,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:20,400 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:20,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 74 [2020-12-23 17:31:20,406 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:20,492 INFO L625 ElimStorePlain]: treesize reduction 36, result has 60.0 percent of original size [2020-12-23 17:31:20,495 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:20,496 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:54 [2020-12-23 17:31:20,673 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:20,674 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-23 17:31:20,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:20,774 INFO L625 ElimStorePlain]: treesize reduction 26, result has 74.5 percent of original size [2020-12-23 17:31:20,807 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:20,807 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 56 [2020-12-23 17:31:20,810 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:20,901 INFO L625 ElimStorePlain]: treesize reduction 26, result has 73.5 percent of original size [2020-12-23 17:31:20,903 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:20,903 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:80, output treesize:72 [2020-12-23 17:31:21,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:21,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:21,092 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:21,102 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,103 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2020-12-23 17:31:21,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:21,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:21,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:21,165 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:21,171 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2020-12-23 17:31:21,173 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:21,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:21,218 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:105, output treesize:75 [2020-12-23 17:31:21,762 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:21,780 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,780 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 51 [2020-12-23 17:31:21,783 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:21,907 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-23 17:31:21,908 INFO L625 ElimStorePlain]: treesize reduction 14, result has 86.8 percent of original size [2020-12-23 17:31:21,917 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:21,937 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:21,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 51 [2020-12-23 17:31:21,942 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:22,036 INFO L625 ElimStorePlain]: treesize reduction 14, result has 85.6 percent of original size [2020-12-23 17:31:22,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,048 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:22,062 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:101, output treesize:95 [2020-12-23 17:31:22,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,065 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,067 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,071 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,075 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,255 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,258 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,259 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,260 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:31:22,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:22,266 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:22,268 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:22,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:23,958 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-23 17:31:23,968 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-23 17:31:23,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:24,326 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 17:31:24,665 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 17:31:25,033 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-23 17:31:25,394 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-12-23 17:31:25,419 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-12-23 17:31:25,419 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:25,427 INFO L443 ElimStorePlain]: Different costs {6=[|v_#valid_45|], 10=[v_prenex_4]} [2020-12-23 17:31:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:25,445 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:25,499 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:25,499 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 97 [2020-12-23 17:31:25,503 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:25,786 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-23 17:31:25,787 INFO L625 ElimStorePlain]: treesize reduction 14, result has 94.2 percent of original size [2020-12-23 17:31:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:25,808 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:25,966 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-23 17:31:25,967 INFO L348 Elim1Store]: treesize reduction 36, result has 82.4 percent of original size [2020-12-23 17:31:25,968 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 45 treesize of output 189 [2020-12-23 17:31:25,971 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:26,261 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 17:31:26,262 INFO L625 ElimStorePlain]: treesize reduction 66, result has 77.9 percent of original size [2020-12-23 17:31:26,267 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-23 17:31:26,267 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:221, output treesize:233 [2020-12-23 17:31:26,611 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-23 17:31:26,620 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 2, 1] term [2020-12-23 17:31:26,621 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:26,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:26,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 17:31:26,630 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:26,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:26,634 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-23 17:31:26,634 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:26,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:26,638 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:31:26,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:31:26,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 17:31:26,656 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_22|], 6=[v_prenex_5], 12=[|v_#memory_$Pointer$.base_24|], 20=[v_prenex_7]} [2020-12-23 17:31:26,669 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 44 treesize of output 32 [2020-12-23 17:31:26,670 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:26,683 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 44 treesize of output 32 [2020-12-23 17:31:26,684 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:27,288 WARN L197 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-12-23 17:31:27,290 INFO L625 ElimStorePlain]: treesize reduction 16, result has 96.5 percent of original size [2020-12-23 17:31:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:27,314 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2020-12-23 17:31:27,315 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:27,334 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:27,335 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2020-12-23 17:31:27,336 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:27,590 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-23 17:31:27,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:27,601 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:27,603 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:27,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:27,607 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:27,608 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 32 [2020-12-23 17:31:27,609 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:27,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:27,619 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:27,621 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:27,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 41 [2020-12-23 17:31:27,623 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:28,068 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-12-23 17:31:28,069 INFO L625 ElimStorePlain]: treesize reduction 13, result has 96.5 percent of original size [2020-12-23 17:31:28,079 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:28,085 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:28,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:28,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:28,094 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:28,101 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:28,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 65 [2020-12-23 17:31:28,104 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:28,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:28,115 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:28,115 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:28,132 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 17:31:28,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 76 [2020-12-23 17:31:28,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:31:28,137 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:31:28,138 INFO L547 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:28,497 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-23 17:31:28,498 INFO L625 ElimStorePlain]: treesize reduction 59, result has 83.5 percent of original size [2020-12-23 17:31:28,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 4 xjuncts. [2020-12-23 17:31:28,506 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:489, output treesize:270 [2020-12-23 17:31:28,876 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-23 17:31:29,337 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-23 17:31:30,028 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-12-23 17:31:30,039 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 4, 11, 1] term [2020-12-23 17:31:30,039 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-23 17:31:30,043 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 12, 1] term [2020-12-23 17:31:30,044 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 17:31:30,569 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2020-12-23 17:31:30,965 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-23 17:31:31,387 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-23 17:31:31,882 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 17:31:31,912 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 13, 1] term [2020-12-23 17:31:31,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:31,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:31:31,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 17:31:31,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:31,930 INFO L443 ElimStorePlain]: Different costs {10=[|v_#valid_46|], 15=[v_prenex_11]} [2020-12-23 17:31:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:31,944 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:31,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:31,948 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:31,981 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:31,981 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 63 [2020-12-23 17:31:31,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:31,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:31,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:31,996 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:32,001 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2020-12-23 17:31:32,003 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:32,390 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-12-23 17:31:32,391 INFO L625 ElimStorePlain]: treesize reduction 167, result has 62.6 percent of original size [2020-12-23 17:31:32,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:32,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:32,470 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:32,471 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 113 [2020-12-23 17:31:32,474 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:32,836 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-23 17:31:32,837 INFO L625 ElimStorePlain]: treesize reduction 18, result has 94.1 percent of original size [2020-12-23 17:31:32,842 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-12-23 17:31:32,843 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:599, output treesize:286 [2020-12-23 17:31:33,275 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 17:31:33,286 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 13, 2, 1] term [2020-12-23 17:31:33,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:33,294 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 2, 1] term [2020-12-23 17:31:33,294 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:33,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:31:33,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-23 17:31:33,321 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-12-23 17:31:33,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:31:33,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:31:33,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:31:33,330 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 17 disjuncts [2020-12-23 17:31:33,346 INFO L443 ElimStorePlain]: Different costs {3=[|#valid|], 6=[v_prenex_14]} [2020-12-23 17:31:33,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:33,362 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 17:31:33,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:33,582 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-23 17:31:33,583 INFO L625 ElimStorePlain]: treesize reduction 168, result has 48.0 percent of original size [2020-12-23 17:31:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:33,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:33,612 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:33,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 33 [2020-12-23 17:31:33,615 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:33,682 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:33,685 INFO L443 ElimStorePlain]: Different costs {12=[v_prenex_12, |v_#memory_$Pointer$.offset_23|], 20=[v_prenex_13, |v_#memory_$Pointer$.base_25|]} [2020-12-23 17:31:33,697 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:33,697 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 76 [2020-12-23 17:31:33,700 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:33,800 INFO L625 ElimStorePlain]: treesize reduction 24, result has 83.3 percent of original size [2020-12-23 17:31:33,800 INFO L515 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_23| vanished before elimination [2020-12-23 17:31:33,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:33,806 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:33,807 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:33,824 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:33,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 97 [2020-12-23 17:31:33,827 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:33,913 INFO L625 ElimStorePlain]: treesize reduction 57, result has 66.5 percent of original size [2020-12-23 17:31:33,914 INFO L515 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_25| vanished before elimination [2020-12-23 17:31:33,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:33,917 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 11 variables, input treesize:470, output treesize:113 [2020-12-23 17:31:34,215 INFO L443 ElimStorePlain]: Different costs {4=[|#memory_$Pointer$.offset|], 6=[|#memory_$Pointer$.base|]} [2020-12-23 17:31:34,223 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:34,224 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 10 [2020-12-23 17:31:34,226 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:34,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:34,279 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:34,286 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:34,286 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 29 [2020-12-23 17:31:34,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:31:34,290 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:34,313 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:34,318 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:31:34,318 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:124, output treesize:7 [2020-12-23 17:31:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:31:34,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:31:34,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35] total 65 [2020-12-23 17:31:34,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815327418] [2020-12-23 17:31:34,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-23 17:31:34,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:31:34,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-23 17:31:34,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3948, Unknown=0, NotChecked=0, Total=4160 [2020-12-23 17:31:34,366 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 65 states. [2020-12-23 17:31:35,412 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 17:31:35,696 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-23 17:31:36,124 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-12-23 17:31:36,427 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-23 17:31:36,819 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-23 17:31:37,267 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2020-12-23 17:31:37,675 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-12-23 17:31:38,036 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2020-12-23 17:31:38,394 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-23 17:31:38,922 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-12-23 17:31:39,526 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 99 [2020-12-23 17:31:40,289 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 104 [2020-12-23 17:31:41,072 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 112 [2020-12-23 17:31:41,973 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 117 [2020-12-23 17:31:43,715 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 181 DAG size of output: 113 [2020-12-23 17:31:44,531 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 117 [2020-12-23 17:31:45,389 WARN L197 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 118 [2020-12-23 17:31:45,977 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 91 [2020-12-23 17:31:46,660 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 136 [2020-12-23 17:31:47,301 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 119 [2020-12-23 17:31:47,982 WARN L197 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 125 [2020-12-23 17:31:48,630 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 123 [2020-12-23 17:31:49,123 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-12-23 17:31:49,663 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2020-12-23 17:31:50,252 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2020-12-23 17:31:50,714 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-23 17:31:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:31:51,443 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-12-23 17:31:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 17:31:51,444 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 47 [2020-12-23 17:31:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:31:51,444 INFO L225 Difference]: With dead ends: 88 [2020-12-23 17:31:51,445 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 17:31:51,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=679, Invalid=8633, Unknown=0, NotChecked=0, Total=9312 [2020-12-23 17:31:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 17:31:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-12-23 17:31:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 17:31:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-23 17:31:51,451 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 47 [2020-12-23 17:31:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:31:51,451 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-23 17:31:51,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-12-23 17:31:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-23 17:31:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 17:31:51,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:31:51,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:31:51,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:31:51,668 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:31:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:31:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2016353018, now seen corresponding path program 1 times [2020-12-23 17:31:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:31:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472934695] [2020-12-23 17:31:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:31:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:31:52,963 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-12-23 17:31:53,203 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-12-23 17:31:53,420 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-12-23 17:31:53,633 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-12-23 17:31:53,863 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2020-12-23 17:31:54,078 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-12-23 17:31:54,300 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-12-23 17:31:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:31:54,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472934695] [2020-12-23 17:31:54,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512552288] [2020-12-23 17:31:54,901 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:31:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:31:55,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 88 conjunts are in the unsatisfiable core [2020-12-23 17:31:55,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:31:55,047 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 17:31:55,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-12-23 17:31:55,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:55,073 INFO L625 ElimStorePlain]: treesize reduction 8, result has 70.4 percent of original size [2020-12-23 17:31:55,074 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:55,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2020-12-23 17:31:56,623 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:31:56,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:56,677 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:56,680 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:56,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:86, output treesize:97 [2020-12-23 17:31:58,402 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 [2020-12-23 17:31:58,404 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:31:58,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:58,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:58,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:166, output treesize:155 [2020-12-23 17:31:59,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:59,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:31:59,264 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:31:59,267 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:31:59,267 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 72 [2020-12-23 17:31:59,270 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:59,418 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-23 17:31:59,419 INFO L625 ElimStorePlain]: treesize reduction 13, result has 89.4 percent of original size [2020-12-23 17:31:59,422 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 17:31:59,423 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:148, output treesize:110 [2020-12-23 17:32:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:32:00,579 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:32:00,580 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 42 [2020-12-23 17:32:00,582 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:32:00,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:32:00,650 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:32:00,650 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:123, output treesize:64 [2020-12-23 17:32:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:32:01,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:32:01,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 56 [2020-12-23 17:32:01,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604091903] [2020-12-23 17:32:01,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 17:32:01,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 17:32:01,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2992, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 17:32:01,672 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 57 states. [2020-12-23 17:32:02,556 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-23 17:32:02,896 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 17:32:03,546 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 17:32:03,981 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-23 17:32:04,521 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-12-23 17:32:04,942 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-12-23 17:32:05,722 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-12-23 17:32:06,708 WARN L197 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2020-12-23 17:32:07,771 WARN L197 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2020-12-23 17:32:08,970 WARN L197 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2020-12-23 17:32:10,137 WARN L197 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2020-12-23 17:32:11,312 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2020-12-23 17:32:12,529 WARN L197 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2020-12-23 17:32:13,786 WARN L197 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 103 [2020-12-23 17:32:14,821 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-23 17:32:16,451 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-12-23 17:32:17,559 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-23 17:32:18,774 WARN L197 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 17:32:21,665 WARN L197 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-12-23 17:32:24,642 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-12-23 17:32:26,828 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-12-23 17:32:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:27,803 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-12-23 17:32:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 17:32:27,807 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 47 [2020-12-23 17:32:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:27,808 INFO L225 Difference]: With dead ends: 85 [2020-12-23 17:32:27,808 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 17:32:27,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=537, Invalid=6105, Unknown=0, NotChecked=0, Total=6642 [2020-12-23 17:32:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 17:32:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-23 17:32:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 17:32:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-12-23 17:32:27,813 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-12-23 17:32:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:27,813 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-12-23 17:32:27,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 17:32:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-12-23 17:32:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 17:32:27,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:32:27,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:32:28,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 17:32:28,020 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:32:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:32:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1757894151, now seen corresponding path program 3 times [2020-12-23 17:32:28,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:32:28,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102446463] [2020-12-23 17:32:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:32:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:32:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 17:32:28,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102446463] [2020-12-23 17:32:28,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204293548] [2020-12-23 17:32:28,076 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 [2020-12-23 17:32:28,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 17:32:28,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:32:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:32:28,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:32:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 17:32:28,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:32:28,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-12-23 17:32:28,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550291534] [2020-12-23 17:32:28,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:32:28,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:32:28,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:32:28,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:32:28,485 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 5 states. [2020-12-23 17:32:28,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:32:28,501 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-23 17:32:28,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:32:28,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-23 17:32:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:32:28,503 INFO L225 Difference]: With dead ends: 21 [2020-12-23 17:32:28,503 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:32:28,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:32:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:32:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:32:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:32:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:32:28,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2020-12-23 17:32:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:32:28,504 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:32:28,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:32:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:32:28,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:32:28,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 17:32:28,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:32:28 BoogieIcfgContainer [2020-12-23 17:32:28,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:32:28,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:32:28,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:32:28,715 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:32:28,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:30:25" (3/4) ... [2020-12-23 17:32:28,719 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:32:28,736 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-23 17:32:28,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-23 17:32:28,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 17:32:28,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:32:28,785 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-simple/sll2n_remove_all.i-witness.graphml [2020-12-23 17:32:28,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:32:28,787 INFO L168 Benchmark]: Toolchain (without parser) took 125104.20 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 148.7 MB in the beginning and 143.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 198.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,787 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 175.1 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:32:28,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.09 ms. Allocated memory is still 175.1 MB. Free memory was 148.5 MB in the beginning and 126.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.54 ms. Allocated memory is still 175.1 MB. Free memory was 126.1 MB in the beginning and 124.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,788 INFO L168 Benchmark]: Boogie Preprocessor took 68.12 ms. Allocated memory is still 175.1 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,789 INFO L168 Benchmark]: RCFGBuilder took 592.00 ms. Allocated memory is still 175.1 MB. Free memory was 122.5 MB in the beginning and 134.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,789 INFO L168 Benchmark]: TraceAbstraction took 123652.00 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 134.3 MB in the beginning and 147.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 179.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,789 INFO L168 Benchmark]: Witness Printer took 70.56 ms. Allocated memory is still 367.0 MB. Free memory was 147.1 MB in the beginning and 143.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:32:28,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 175.1 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 605.09 ms. Allocated memory is still 175.1 MB. Free memory was 148.5 MB in the beginning and 126.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.54 ms. Allocated memory is still 175.1 MB. Free memory was 126.1 MB in the beginning and 124.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.12 ms. Allocated memory is still 175.1 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 592.00 ms. Allocated memory is still 175.1 MB. Free memory was 122.5 MB in the beginning and 134.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 123652.00 ms. Allocated memory was 175.1 MB in the beginning and 367.0 MB in the end (delta: 191.9 MB). Free memory was 134.3 MB in the beginning and 147.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 179.6 MB. Max. memory is 8.0 GB. * Witness Printer took 70.56 ms. Allocated memory is still 367.0 MB. Free memory was 147.1 MB in the beginning and 143.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 579]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 595]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 580]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 595]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 587]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 609]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 597]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 593]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 605]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 123.5s, OverallIterations: 25, TraceHistogramMax: 3, AutomataDifference: 75.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 667 SDtfs, 5611 SDslu, 2403 SDs, 0 SdLazy, 6771 SolverSat, 825 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 301 SyntacticMatches, 12 SemanticMatches, 601 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7097 ImplicationChecksByTransitivity, 85.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 284 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 42.5s InterpolantComputationTime, 1155 NumberOfCodeBlocks, 1155 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1118 ConstructedInterpolants, 196 QuantifiedInterpolants, 947407 SizeOfPredicates, 235 NumberOfNonLiveVariables, 2794 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 37 InterpolantComputations, 16 PerfectInterpolantSequences, 289/499 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...