/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:56:08,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:56:08,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:56:08,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:56:08,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:56:08,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:56:08,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:56:08,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:56:08,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:56:08,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:56:08,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:56:08,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:56:08,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:56:08,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:56:08,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:56:08,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:56:08,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:56:08,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:56:08,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:56:08,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:56:08,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:56:08,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:56:08,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:56:08,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:56:08,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:56:08,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:56:08,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:56:08,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:56:08,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:56:08,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:56:08,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:56:08,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:56:08,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:56:08,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:56:08,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:56:08,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:56:08,699 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 16:56:08,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:56:08,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:56:08,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:56:08,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:56:08,763 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:56:08,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:56:08,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:56:08,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:56:08,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:56:08,764 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:56:08,765 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:56:08,765 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:56:08,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:56:08,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:56:08,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:56:08,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:56:08,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:56:08,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:56:08,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:56:08,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:56:08,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:56:08,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:56:08,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:56:08,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:56:08,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:56:09,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:56:09,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:56:09,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:56:09,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:56:09,315 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:56:09,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2020-12-23 16:56:09,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6214559c5/f3e52c61adb741cd849f15a0fb966386/FLAG2876408cf [2020-12-23 16:56:10,225 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:56:10,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2020-12-23 16:56:10,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6214559c5/f3e52c61adb741cd849f15a0fb966386/FLAG2876408cf [2020-12-23 16:56:10,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6214559c5/f3e52c61adb741cd849f15a0fb966386 [2020-12-23 16:56:10,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:56:10,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:56:10,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:56:10,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:56:10,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:56:10,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b22d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10, skipping insertion in model container [2020-12-23 16:56:10,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:56:10,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 16:56:10,754 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/array-examples/standard_strcpy_ground-2.i[817,830] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~src~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~dst~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 16:56:10,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:56:10,798 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 16:56:10,822 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/array-examples/standard_strcpy_ground-2.i[817,830] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#src~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#src~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#dst~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#dst~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 16:56:10,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:56:10,877 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:56:10,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10 WrapperNode [2020-12-23 16:56:10,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:56:10,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:56:10,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:56:10,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:56:10,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:56:10,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:56:10,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:56:10,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:56:10,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:10,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:11,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:11,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (1/1) ... [2020-12-23 16:56:11,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:56:11,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:56:11,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:56:11,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:56:11,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (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 16:56:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:56:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:56:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:56:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:56:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:56:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:56:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:56:11,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:56:11,782 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 16:56:11,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:56:11 BoogieIcfgContainer [2020-12-23 16:56:11,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:56:11,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:56:11,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:56:11,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:56:11,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:56:10" (1/3) ... [2020-12-23 16:56:11,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62edecfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:56:11, skipping insertion in model container [2020-12-23 16:56:11,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:10" (2/3) ... [2020-12-23 16:56:11,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62edecfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:56:11, skipping insertion in model container [2020-12-23 16:56:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:56:11" (3/3) ... [2020-12-23 16:56:11,794 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-2.i [2020-12-23 16:56:11,802 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:56:11,808 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-12-23 16:56:11,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-12-23 16:56:11,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:56:11,859 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:56:11,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:56:11,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:56:11,860 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:56:11,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:56:11,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:56:11,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:56:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-23 16:56:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 16:56:11,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:11,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 16:56:11,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-23 16:56:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:11,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561751110] [2020-12-23 16:56:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:12,123 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 16:56:12,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561751110] [2020-12-23 16:56:12,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:56:12,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:56:12,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374772757] [2020-12-23 16:56:12,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:56:12,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:56:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:56:12,152 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-12-23 16:56:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:12,217 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-23 16:56:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:56:12,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 16:56:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:12,230 INFO L225 Difference]: With dead ends: 35 [2020-12-23 16:56:12,230 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 16:56:12,232 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 16:56:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 16:56:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 16:56:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 16:56:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-23 16:56:12,275 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 4 [2020-12-23 16:56:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:12,276 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-23 16:56:12,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:56:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-23 16:56:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 16:56:12,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:12,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 16:56:12,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:56:12,279 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-23 16:56:12,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:12,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209053540] [2020-12-23 16:56:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:12,388 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 16:56:12,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209053540] [2020-12-23 16:56:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:56:12,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:56:12,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123586009] [2020-12-23 16:56:12,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:56:12,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:12,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:56:12,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:56:12,392 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2020-12-23 16:56:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:12,451 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-23 16:56:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:56:12,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 16:56:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:12,453 INFO L225 Difference]: With dead ends: 37 [2020-12-23 16:56:12,453 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 16:56:12,454 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 16:56:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 16:56:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-12-23 16:56:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:56:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 16:56:12,461 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 4 [2020-12-23 16:56:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:12,461 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 16:56:12,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:56:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 16:56:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:56:12,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:12,462 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:12,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:56:12,463 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2020-12-23 16:56:12,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:12,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234692735] [2020-12-23 16:56:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:12,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234692735] [2020-12-23 16:56:12,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141954230] [2020-12-23 16:56:12,587 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 16:56:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:56:12,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:12,814 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 16:56:12,817 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:56:12,822 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:12,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:12,849 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 16:56:12,849 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-12-23 16:56:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:12,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:12,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-23 16:56:12,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232361282] [2020-12-23 16:56:12,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:56:12,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:56:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:56:12,939 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-23 16:56:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:13,075 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-23 16:56:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:56:13,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 16:56:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:13,080 INFO L225 Difference]: With dead ends: 41 [2020-12-23 16:56:13,081 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 16:56:13,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:56:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 16:56:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-12-23 16:56:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 16:56:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 16:56:13,096 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2020-12-23 16:56:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:13,097 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 16:56:13,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:56:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 16:56:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:56:13,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:13,099 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2020-12-23 16:56:13,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 16:56:13,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:13,316 INFO L82 PathProgramCache]: Analyzing trace with hash 276944844, now seen corresponding path program 2 times [2020-12-23 16:56:13,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:13,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425340879] [2020-12-23 16:56:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:13,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425340879] [2020-12-23 16:56:13,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400350338] [2020-12-23 16:56:13,503 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 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 16:56:13,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:56:13,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:13,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:56:13,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:13,592 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 16:56:13,593 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:56:13,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:13,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:13,610 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 16:56:13,610 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-12-23 16:56:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:13,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:56:13,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2020-12-23 16:56:13,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121641425] [2020-12-23 16:56:13,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:56:13,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:13,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:56:13,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:13,785 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-12-23 16:56:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:13,964 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-12-23 16:56:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:56:13,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 16:56:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:13,966 INFO L225 Difference]: With dead ends: 82 [2020-12-23 16:56:13,966 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 16:56:13,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 16:56:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 45. [2020-12-23 16:56:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 16:56:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-12-23 16:56:13,973 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 12 [2020-12-23 16:56:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:13,974 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-12-23 16:56:13,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:56:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-12-23 16:56:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 16:56:13,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:13,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 16:56:14,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:14,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2020-12-23 16:56:14,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:14,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81606761] [2020-12-23 16:56:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:14,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81606761] [2020-12-23 16:56:14,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296680183] [2020-12-23 16:56:14,262 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 16:56:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:14,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:56:14,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:14,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:14,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-23 16:56:14,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683866624] [2020-12-23 16:56:14,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:56:14,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:14,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:56:14,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:56:14,376 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 8 states. [2020-12-23 16:56:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:14,598 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-12-23 16:56:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:56:14,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-23 16:56:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:14,600 INFO L225 Difference]: With dead ends: 115 [2020-12-23 16:56:14,600 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 16:56:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:56:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 16:56:14,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 49. [2020-12-23 16:56:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 16:56:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 16:56:14,607 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 13 [2020-12-23 16:56:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:14,608 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 16:56:14,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:56:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 16:56:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:56:14,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:14,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:14,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:14,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059869, now seen corresponding path program 1 times [2020-12-23 16:56:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:14,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406143418] [2020-12-23 16:56:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:56:14,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406143418] [2020-12-23 16:56:14,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:56:14,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:56:14,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113846273] [2020-12-23 16:56:14,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:56:14,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:56:14,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:56:14,879 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2020-12-23 16:56:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:14,900 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-23 16:56:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:56:14,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 16:56:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:14,901 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:56:14,901 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 16:56:14,902 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 16:56:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 16:56:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 16:56:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 16:56:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-23 16:56:14,906 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2020-12-23 16:56:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:14,907 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-23 16:56:14,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:56:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-23 16:56:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:56:14,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:14,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:14,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:56:14,910 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059868, now seen corresponding path program 1 times [2020-12-23 16:56:14,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:14,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497421580] [2020-12-23 16:56:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:14,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497421580] [2020-12-23 16:56:14,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654846602] [2020-12-23 16:56:14,972 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 16:56:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:15,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:56:15,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:15,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:15,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 16:56:15,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632988741] [2020-12-23 16:56:15,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:56:15,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:56:15,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:56:15,112 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-23 16:56:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:15,245 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2020-12-23 16:56:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:56:15,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 16:56:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:15,247 INFO L225 Difference]: With dead ends: 133 [2020-12-23 16:56:15,247 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 16:56:15,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:56:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 16:56:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 51. [2020-12-23 16:56:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 16:56:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-23 16:56:15,254 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 20 [2020-12-23 16:56:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:15,255 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-23 16:56:15,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:56:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-23 16:56:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 16:56:15,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:15,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:15,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:15,467 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:15,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1143766311, now seen corresponding path program 2 times [2020-12-23 16:56:15,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:15,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407819707] [2020-12-23 16:56:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:15,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407819707] [2020-12-23 16:56:15,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675197315] [2020-12-23 16:56:15,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:15,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:56:15,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:15,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:56:15,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:15,662 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 16:56:15,663 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:56:15,664 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:15,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:15,673 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 16:56:15,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2020-12-23 16:56:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:56:15,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:56:15,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-12-23 16:56:15,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874638410] [2020-12-23 16:56:15,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:56:15,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:15,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:56:15,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:15,736 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 4 states. [2020-12-23 16:56:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:15,791 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-23 16:56:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:56:15,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-23 16:56:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:15,792 INFO L225 Difference]: With dead ends: 64 [2020-12-23 16:56:15,793 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 16:56:15,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 16:56:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2020-12-23 16:56:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 16:56:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-12-23 16:56:15,798 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2020-12-23 16:56:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:15,798 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-12-23 16:56:15,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:56:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-12-23 16:56:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 16:56:15,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:15,799 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:16,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:16,013 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1096967758, now seen corresponding path program 1 times [2020-12-23 16:56:16,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:16,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363507536] [2020-12-23 16:56:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:56:16,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363507536] [2020-12-23 16:56:16,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:56:16,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:56:16,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021834178] [2020-12-23 16:56:16,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:56:16,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:56:16,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:56:16,086 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 4 states. [2020-12-23 16:56:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:16,122 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-23 16:56:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:56:16,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-23 16:56:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:16,124 INFO L225 Difference]: With dead ends: 56 [2020-12-23 16:56:16,124 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 16:56:16,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:56:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 16:56:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-12-23 16:56:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 16:56:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-23 16:56:16,128 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 25 [2020-12-23 16:56:16,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:16,128 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-23 16:56:16,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:56:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-23 16:56:16,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 16:56:16,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:16,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:16,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:56:16,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:16,131 INFO L82 PathProgramCache]: Analyzing trace with hash -352203591, now seen corresponding path program 1 times [2020-12-23 16:56:16,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:16,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893497551] [2020-12-23 16:56:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:16,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893497551] [2020-12-23 16:56:16,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372103088] [2020-12-23 16:56:16,199 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 16:56:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:16,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:56:16,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:16,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:16,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 16:56:16,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265052858] [2020-12-23 16:56:16,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:56:16,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:16,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:56:16,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:56:16,303 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 8 states. [2020-12-23 16:56:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:16,433 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-12-23 16:56:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:56:16,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-23 16:56:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:16,434 INFO L225 Difference]: With dead ends: 148 [2020-12-23 16:56:16,435 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 16:56:16,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:56:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 16:56:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 57. [2020-12-23 16:56:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:56:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-23 16:56:16,440 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 26 [2020-12-23 16:56:16,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:16,441 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-23 16:56:16,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:56:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-23 16:56:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 16:56:16,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:16,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:16,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:16,657 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1281757436, now seen corresponding path program 2 times [2020-12-23 16:56:16,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:16,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311400023] [2020-12-23 16:56:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:16,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311400023] [2020-12-23 16:56:16,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272616635] [2020-12-23 16:56:16,750 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 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 16:56:16,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:56:16,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:16,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:56:16,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:16,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:16,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-23 16:56:16,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078212649] [2020-12-23 16:56:16,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:56:16,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:56:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:16,898 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 9 states. [2020-12-23 16:56:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:17,037 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-12-23 16:56:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:56:17,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 16:56:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:17,039 INFO L225 Difference]: With dead ends: 174 [2020-12-23 16:56:17,040 INFO L226 Difference]: Without dead ends: 174 [2020-12-23 16:56:17,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:56:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-23 16:56:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 61. [2020-12-23 16:56:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 16:56:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-12-23 16:56:17,062 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 30 [2020-12-23 16:56:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:17,063 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-12-23 16:56:17,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:56:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-12-23 16:56:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 16:56:17,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:17,065 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:17,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:17,266 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 3 times [2020-12-23 16:56:17,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:17,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956630715] [2020-12-23 16:56:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:56:17,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956630715] [2020-12-23 16:56:17,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175890520] [2020-12-23 16:56:17,383 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 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 16:56:17,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:56:17,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:17,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:56:17,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-23 16:56:17,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:17,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2020-12-23 16:56:17,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080839510] [2020-12-23 16:56:17,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:56:17,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:56:17,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:56:17,613 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 15 states. [2020-12-23 16:56:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:18,257 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2020-12-23 16:56:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:56:18,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-12-23 16:56:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:18,261 INFO L225 Difference]: With dead ends: 197 [2020-12-23 16:56:18,261 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 16:56:18,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:56:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 16:56:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 62. [2020-12-23 16:56:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 16:56:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-12-23 16:56:18,267 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 34 [2020-12-23 16:56:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:18,267 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-12-23 16:56:18,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:56:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-12-23 16:56:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 16:56:18,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:18,269 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:18,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 16:56:18,485 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash -697671951, now seen corresponding path program 1 times [2020-12-23 16:56:18,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:18,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452028282] [2020-12-23 16:56:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:18,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452028282] [2020-12-23 16:56:18,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198310498] [2020-12-23 16:56:18,588 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 16:56:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:18,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:56:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:18,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:18,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-23 16:56:18,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325319593] [2020-12-23 16:56:18,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 16:56:18,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:18,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 16:56:18,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 16:56:18,748 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 11 states. [2020-12-23 16:56:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:18,910 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-12-23 16:56:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:56:18,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-12-23 16:56:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:18,929 INFO L225 Difference]: With dead ends: 224 [2020-12-23 16:56:18,929 INFO L226 Difference]: Without dead ends: 224 [2020-12-23 16:56:18,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 16:56:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-23 16:56:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 66. [2020-12-23 16:56:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 16:56:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-23 16:56:18,934 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 38 [2020-12-23 16:56:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:18,935 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-23 16:56:18,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 16:56:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-23 16:56:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 16:56:18,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:18,936 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:19,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:19,150 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2077447860, now seen corresponding path program 2 times [2020-12-23 16:56:19,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:19,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71427621] [2020-12-23 16:56:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:19,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71427621] [2020-12-23 16:56:19,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955918148] [2020-12-23 16:56:19,275 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 16:56:19,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:56:19,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:19,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:56:19,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-23 16:56:19,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:56:19,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2020-12-23 16:56:19,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831446677] [2020-12-23 16:56:19,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:56:19,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:19,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:56:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:56:19,458 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 4 states. [2020-12-23 16:56:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:19,503 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-23 16:56:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:56:19,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-12-23 16:56:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:19,505 INFO L225 Difference]: With dead ends: 65 [2020-12-23 16:56:19,505 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 16:56:19,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:56:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 16:56:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-23 16:56:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 16:56:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-12-23 16:56:19,508 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 42 [2020-12-23 16:56:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:19,509 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-12-23 16:56:19,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:56:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-12-23 16:56:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 16:56:19,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:19,510 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:19,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:19,725 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1564990626, now seen corresponding path program 1 times [2020-12-23 16:56:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:19,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591604662] [2020-12-23 16:56:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:19,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591604662] [2020-12-23 16:56:19,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787371432] [2020-12-23 16:56:19,880 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 16:56:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:19,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:56:19,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:20,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:20,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-23 16:56:20,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786763257] [2020-12-23 16:56:20,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:56:20,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:20,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:56:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:56:20,058 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 12 states. [2020-12-23 16:56:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:20,272 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-12-23 16:56:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:56:20,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-12-23 16:56:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:20,275 INFO L225 Difference]: With dead ends: 218 [2020-12-23 16:56:20,275 INFO L226 Difference]: Without dead ends: 218 [2020-12-23 16:56:20,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:56:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-23 16:56:20,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 65. [2020-12-23 16:56:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 16:56:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-12-23 16:56:20,295 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2020-12-23 16:56:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:20,295 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-12-23 16:56:20,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:56:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-12-23 16:56:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 16:56:20,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:20,300 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:20,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:56:20,503 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:20,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1246743681, now seen corresponding path program 2 times [2020-12-23 16:56:20,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:20,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556202823] [2020-12-23 16:56:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:20,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556202823] [2020-12-23 16:56:20,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144849052] [2020-12-23 16:56:20,699 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 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 16:56:20,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:56:20,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:20,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:56:20,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:20,766 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 16:56:20,767 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:56:20,768 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:20,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:20,776 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:20,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-23 16:56:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-23 16:56:20,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:20,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3] total 14 [2020-12-23 16:56:20,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705306748] [2020-12-23 16:56:20,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 16:56:20,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 16:56:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:56:20,928 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 14 states. [2020-12-23 16:56:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:21,714 INFO L93 Difference]: Finished difference Result 226 states and 237 transitions. [2020-12-23 16:56:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:56:21,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-12-23 16:56:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:21,716 INFO L225 Difference]: With dead ends: 226 [2020-12-23 16:56:21,717 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 16:56:21,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:56:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 16:56:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 117. [2020-12-23 16:56:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-23 16:56:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-12-23 16:56:21,722 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 49 [2020-12-23 16:56:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:21,722 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-12-23 16:56:21,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 16:56:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-12-23 16:56:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 16:56:21,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:21,723 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:21,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 16:56:21,937 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash 248575996, now seen corresponding path program 1 times [2020-12-23 16:56:21,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:21,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109397192] [2020-12-23 16:56:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-23 16:56:22,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109397192] [2020-12-23 16:56:22,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233968667] [2020-12-23 16:56:22,032 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:22,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 16:56:22,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:22,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:22,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14] total 19 [2020-12-23 16:56:22,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961554912] [2020-12-23 16:56:22,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:56:22,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:22,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:56:22,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:56:22,339 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 19 states. [2020-12-23 16:56:23,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:23,201 INFO L93 Difference]: Finished difference Result 386 states and 399 transitions. [2020-12-23 16:56:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 16:56:23,202 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-23 16:56:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:23,204 INFO L225 Difference]: With dead ends: 386 [2020-12-23 16:56:23,205 INFO L226 Difference]: Without dead ends: 386 [2020-12-23 16:56:23,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=550, Invalid=1090, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:56:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-12-23 16:56:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 123. [2020-12-23 16:56:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-23 16:56:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-12-23 16:56:23,212 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 58 [2020-12-23 16:56:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:23,212 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-12-23 16:56:23,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:56:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-12-23 16:56:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 16:56:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:23,213 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:23,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 16:56:23,426 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:23,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:23,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1781360740, now seen corresponding path program 1 times [2020-12-23 16:56:23,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:23,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526713154] [2020-12-23 16:56:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-12-23 16:56:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526713154] [2020-12-23 16:56:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494030885] [2020-12-23 16:56:23,545 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:23,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 16:56:23,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:23,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:23,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 19 [2020-12-23 16:56:23,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008236223] [2020-12-23 16:56:23,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:56:23,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:23,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:56:23,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=200, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:56:23,901 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 19 states. [2020-12-23 16:56:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:24,863 INFO L93 Difference]: Finished difference Result 405 states and 419 transitions. [2020-12-23 16:56:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 16:56:24,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-12-23 16:56:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:24,866 INFO L225 Difference]: With dead ends: 405 [2020-12-23 16:56:24,866 INFO L226 Difference]: Without dead ends: 405 [2020-12-23 16:56:24,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=604, Invalid=1202, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:56:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-12-23 16:56:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 128. [2020-12-23 16:56:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-23 16:56:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-12-23 16:56:24,875 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 63 [2020-12-23 16:56:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:24,875 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-12-23 16:56:24,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:56:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-12-23 16:56:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 16:56:24,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:24,877 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:25,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:25,091 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1936428859, now seen corresponding path program 1 times [2020-12-23 16:56:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:25,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381349570] [2020-12-23 16:56:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:25,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381349570] [2020-12-23 16:56:25,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402974161] [2020-12-23 16:56:25,285 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:25,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 16:56:25,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:25,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:25,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-23 16:56:25,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906157547] [2020-12-23 16:56:25,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 16:56:25,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:25,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 16:56:25,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:56:25,486 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 17 states. [2020-12-23 16:56:25,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:25,756 INFO L93 Difference]: Finished difference Result 352 states and 367 transitions. [2020-12-23 16:56:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 16:56:25,756 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-12-23 16:56:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:25,758 INFO L225 Difference]: With dead ends: 352 [2020-12-23 16:56:25,758 INFO L226 Difference]: Without dead ends: 352 [2020-12-23 16:56:25,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:56:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-12-23 16:56:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 132. [2020-12-23 16:56:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 16:56:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2020-12-23 16:56:25,763 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 70 [2020-12-23 16:56:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:25,764 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2020-12-23 16:56:25,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 16:56:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2020-12-23 16:56:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 16:56:25,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:25,765 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:25,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:25,976 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1816814456, now seen corresponding path program 2 times [2020-12-23 16:56:25,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:25,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017942931] [2020-12-23 16:56:25,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:26,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017942931] [2020-12-23 16:56:26,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254342296] [2020-12-23 16:56:26,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:26,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:56:26,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:26,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 16:56:26,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:26,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:26,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-23 16:56:26,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950567193] [2020-12-23 16:56:26,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 16:56:26,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 16:56:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:56:26,434 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 18 states. [2020-12-23 16:56:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:26,687 INFO L93 Difference]: Finished difference Result 377 states and 393 transitions. [2020-12-23 16:56:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:56:26,687 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-12-23 16:56:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:26,689 INFO L225 Difference]: With dead ends: 377 [2020-12-23 16:56:26,689 INFO L226 Difference]: Without dead ends: 377 [2020-12-23 16:56:26,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:56:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-12-23 16:56:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 136. [2020-12-23 16:56:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-23 16:56:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2020-12-23 16:56:26,695 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 74 [2020-12-23 16:56:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:26,696 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2020-12-23 16:56:26,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 16:56:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2020-12-23 16:56:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 16:56:26,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:26,697 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:26,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:26,913 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1962594613, now seen corresponding path program 3 times [2020-12-23 16:56:26,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:26,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001952064] [2020-12-23 16:56:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:56:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001952064] [2020-12-23 16:56:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24864811] [2020-12-23 16:56:27,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:27,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:56:27,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:27,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 16:56:27,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:27,379 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-12-23 16:56:27,380 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 15 treesize of output 15 [2020-12-23 16:56:27,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:27,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:27,395 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:27,395 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-23 16:56:27,499 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:27,499 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2020-12-23 16:56:27,502 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:27,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:27,505 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:27,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-23 16:56:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-12-23 16:56:27,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:27,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2020-12-23 16:56:27,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293964779] [2020-12-23 16:56:27,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 16:56:27,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 16:56:27,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:56:27,556 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 26 states. [2020-12-23 16:56:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:28,675 INFO L93 Difference]: Finished difference Result 412 states and 429 transitions. [2020-12-23 16:56:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 16:56:28,676 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2020-12-23 16:56:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:28,679 INFO L225 Difference]: With dead ends: 412 [2020-12-23 16:56:28,679 INFO L226 Difference]: Without dead ends: 412 [2020-12-23 16:56:28,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=812, Invalid=1540, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 16:56:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-23 16:56:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 146. [2020-12-23 16:56:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 16:56:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2020-12-23 16:56:28,687 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 78 [2020-12-23 16:56:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:28,687 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2020-12-23 16:56:28,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 16:56:28,687 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2020-12-23 16:56:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 16:56:28,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:28,689 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:28,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 16:56:28,903 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:28,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1916727749, now seen corresponding path program 1 times [2020-12-23 16:56:28,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:28,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233989613] [2020-12-23 16:56:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:29,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233989613] [2020-12-23 16:56:29,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155005359] [2020-12-23 16:56:29,148 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:29,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 16:56:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:29,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:29,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-23 16:56:29,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103177941] [2020-12-23 16:56:29,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 16:56:29,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 16:56:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:56:29,334 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand 20 states. [2020-12-23 16:56:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:29,663 INFO L93 Difference]: Finished difference Result 429 states and 447 transitions. [2020-12-23 16:56:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:56:29,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 85 [2020-12-23 16:56:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:29,671 INFO L225 Difference]: With dead ends: 429 [2020-12-23 16:56:29,672 INFO L226 Difference]: Without dead ends: 429 [2020-12-23 16:56:29,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:56:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-23 16:56:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 150. [2020-12-23 16:56:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 16:56:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2020-12-23 16:56:29,678 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 85 [2020-12-23 16:56:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:29,678 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2020-12-23 16:56:29,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 16:56:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2020-12-23 16:56:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-23 16:56:29,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:29,679 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:29,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 16:56:29,895 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:29,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1830779880, now seen corresponding path program 2 times [2020-12-23 16:56:29,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:29,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074096427] [2020-12-23 16:56:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:30,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074096427] [2020-12-23 16:56:30,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275714372] [2020-12-23 16:56:30,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:30,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:56:30,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:30,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 16:56:30,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:30,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:30,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-23 16:56:30,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461069789] [2020-12-23 16:56:30,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 16:56:30,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:30,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 16:56:30,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:56:30,444 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 21 states. [2020-12-23 16:56:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:30,800 INFO L93 Difference]: Finished difference Result 454 states and 473 transitions. [2020-12-23 16:56:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 16:56:30,800 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 89 [2020-12-23 16:56:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:30,803 INFO L225 Difference]: With dead ends: 454 [2020-12-23 16:56:30,803 INFO L226 Difference]: Without dead ends: 454 [2020-12-23 16:56:30,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:56:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-23 16:56:30,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 154. [2020-12-23 16:56:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 16:56:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-12-23 16:56:30,810 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 89 [2020-12-23 16:56:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:30,810 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-12-23 16:56:30,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 16:56:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-12-23 16:56:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 16:56:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:30,811 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:31,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 16:56:31,025 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:31,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1835516789, now seen corresponding path program 3 times [2020-12-23 16:56:31,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:31,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281941429] [2020-12-23 16:56:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 16:56:31,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281941429] [2020-12-23 16:56:31,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787680693] [2020-12-23 16:56:31,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:31,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:56:31,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:56:31,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-12-23 16:56:31,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:31,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 24 [2020-12-23 16:56:31,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089329226] [2020-12-23 16:56:31,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 16:56:31,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 16:56:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:56:31,584 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 24 states. [2020-12-23 16:56:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:31,965 INFO L93 Difference]: Finished difference Result 471 states and 490 transitions. [2020-12-23 16:56:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:56:31,966 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-12-23 16:56:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:31,969 INFO L225 Difference]: With dead ends: 471 [2020-12-23 16:56:31,970 INFO L226 Difference]: Without dead ends: 462 [2020-12-23 16:56:31,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:56:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-12-23 16:56:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 152. [2020-12-23 16:56:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-23 16:56:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2020-12-23 16:56:31,976 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 93 [2020-12-23 16:56:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:31,977 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2020-12-23 16:56:31,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 16:56:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2020-12-23 16:56:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-23 16:56:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:31,978 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:32,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 16:56:32,192 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:32,192 INFO L82 PathProgramCache]: Analyzing trace with hash -5947292, now seen corresponding path program 4 times [2020-12-23 16:56:32,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:32,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866258393] [2020-12-23 16:56:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 16:56:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866258393] [2020-12-23 16:56:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031724450] [2020-12-23 16:56:32,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:33,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:56:33,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:33,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 16:56:33,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 16:56:33,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:33,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-23 16:56:33,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324492878] [2020-12-23 16:56:33,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 16:56:33,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:33,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 16:56:33,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:56:33,318 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 23 states. [2020-12-23 16:56:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:33,701 INFO L93 Difference]: Finished difference Result 487 states and 507 transitions. [2020-12-23 16:56:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 16:56:33,702 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2020-12-23 16:56:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:33,705 INFO L225 Difference]: With dead ends: 487 [2020-12-23 16:56:33,705 INFO L226 Difference]: Without dead ends: 487 [2020-12-23 16:56:33,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:56:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-12-23 16:56:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 156. [2020-12-23 16:56:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 16:56:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-12-23 16:56:33,712 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 99 [2020-12-23 16:56:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:33,713 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-12-23 16:56:33,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 16:56:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-12-23 16:56:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-23 16:56:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:33,714 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:33,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 16:56:33,928 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash -58806399, now seen corresponding path program 5 times [2020-12-23 16:56:33,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:33,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908702224] [2020-12-23 16:56:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 16:56:34,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908702224] [2020-12-23 16:56:34,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705906076] [2020-12-23 16:56:34,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:34,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-12-23 16:56:34,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 16:56:34,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 16:56:35,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:35,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-23 16:56:35,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839021013] [2020-12-23 16:56:35,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 16:56:35,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 16:56:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:56:35,075 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 24 states. [2020-12-23 16:56:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:35,522 INFO L93 Difference]: Finished difference Result 512 states and 533 transitions. [2020-12-23 16:56:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:56:35,523 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2020-12-23 16:56:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:35,528 INFO L225 Difference]: With dead ends: 512 [2020-12-23 16:56:35,528 INFO L226 Difference]: Without dead ends: 512 [2020-12-23 16:56:35,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:56:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-12-23 16:56:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 160. [2020-12-23 16:56:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-23 16:56:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2020-12-23 16:56:35,537 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 103 [2020-12-23 16:56:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:35,537 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2020-12-23 16:56:35,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 16:56:35,537 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2020-12-23 16:56:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:56:35,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:35,539 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:35,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:35,755 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:35,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:35,756 INFO L82 PathProgramCache]: Analyzing trace with hash 44124190, now seen corresponding path program 6 times [2020-12-23 16:56:35,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:35,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376600866] [2020-12-23 16:56:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 16:56:36,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376600866] [2020-12-23 16:56:36,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106591826] [2020-12-23 16:56:36,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:36,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 16:56:36,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:36,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 16:56:36,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:36,430 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:56:36,443 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2020-12-23 16:56:36,444 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 23 [2020-12-23 16:56:36,450 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,459 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,460 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-23 16:56:36,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:56:36,539 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,540 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 27 treesize of output 37 [2020-12-23 16:56:36,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,555 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:18 [2020-12-23 16:56:36,709 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,709 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2020-12-23 16:56:36,711 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-23 16:56:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-12-23 16:56:36,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:36,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 34 [2020-12-23 16:56:36,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117846187] [2020-12-23 16:56:36,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 16:56:36,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 16:56:36,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=749, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 16:56:36,798 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand 34 states. [2020-12-23 16:56:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:46,774 INFO L93 Difference]: Finished difference Result 747 states and 769 transitions. [2020-12-23 16:56:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2020-12-23 16:56:46,775 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2020-12-23 16:56:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:46,779 INFO L225 Difference]: With dead ends: 747 [2020-12-23 16:56:46,780 INFO L226 Difference]: Without dead ends: 747 [2020-12-23 16:56:46,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17136 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=10020, Invalid=30986, Unknown=0, NotChecked=0, Total=41006 [2020-12-23 16:56:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-12-23 16:56:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 166. [2020-12-23 16:56:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-23 16:56:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2020-12-23 16:56:46,802 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 107 [2020-12-23 16:56:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:46,802 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2020-12-23 16:56:46,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 16:56:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2020-12-23 16:56:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-23 16:56:46,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:46,804 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:47,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 16:56:47,018 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1507061650, now seen corresponding path program 4 times [2020-12-23 16:56:47,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:47,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983601909] [2020-12-23 16:56:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 16:56:47,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983601909] [2020-12-23 16:56:47,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471251983] [2020-12-23 16:56:47,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:47,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:56:47,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:47,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 16:56:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2020-12-23 16:56:47,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:47,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2020-12-23 16:56:47,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783650609] [2020-12-23 16:56:47,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 16:56:47,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:47,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 16:56:47,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=535, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:56:47,881 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 30 states. [2020-12-23 16:56:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:51,776 INFO L93 Difference]: Finished difference Result 870 states and 893 transitions. [2020-12-23 16:56:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-12-23 16:56:51,777 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2020-12-23 16:56:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:51,781 INFO L225 Difference]: With dead ends: 870 [2020-12-23 16:56:51,781 INFO L226 Difference]: Without dead ends: 870 [2020-12-23 16:56:51,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2610, Invalid=6896, Unknown=0, NotChecked=0, Total=9506 [2020-12-23 16:56:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-12-23 16:56:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 174. [2020-12-23 16:56:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-23 16:56:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 184 transitions. [2020-12-23 16:56:51,793 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 184 transitions. Word has length 114 [2020-12-23 16:56:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:51,794 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 184 transitions. [2020-12-23 16:56:51,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 16:56:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 184 transitions. [2020-12-23 16:56:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-23 16:56:51,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:51,796 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:52,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:52,012 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash 347050602, now seen corresponding path program 1 times [2020-12-23 16:56:52,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:52,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572631524] [2020-12-23 16:56:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 16:56:52,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572631524] [2020-12-23 16:56:52,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289171386] [2020-12-23 16:56:52,465 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:52,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 16:56:52,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 16:56:52,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:52,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-23 16:56:52,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071852009] [2020-12-23 16:56:52,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 16:56:52,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 16:56:52,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:56:52,745 INFO L87 Difference]: Start difference. First operand 174 states and 184 transitions. Second operand 27 states. [2020-12-23 16:56:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:53,248 INFO L93 Difference]: Finished difference Result 725 states and 749 transitions. [2020-12-23 16:56:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 16:56:53,249 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 119 [2020-12-23 16:56:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:53,252 INFO L225 Difference]: With dead ends: 725 [2020-12-23 16:56:53,252 INFO L226 Difference]: Without dead ends: 725 [2020-12-23 16:56:53,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:56:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-12-23 16:56:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 178. [2020-12-23 16:56:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 16:56:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2020-12-23 16:56:53,260 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 119 [2020-12-23 16:56:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:53,260 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2020-12-23 16:56:53,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 16:56:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2020-12-23 16:56:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 16:56:53,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:53,262 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:53,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:56:53,476 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash -355512057, now seen corresponding path program 2 times [2020-12-23 16:56:53,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:53,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372707221] [2020-12-23 16:56:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 16:56:54,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372707221] [2020-12-23 16:56:54,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177983913] [2020-12-23 16:56:54,028 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:54,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:56:54,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:54,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:56:54,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2020-12-23 16:56:54,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:54,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5] total 31 [2020-12-23 16:56:54,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330639084] [2020-12-23 16:56:54,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 16:56:54,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 16:56:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2020-12-23 16:56:54,421 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 31 states. [2020-12-23 16:56:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:59,443 INFO L93 Difference]: Finished difference Result 732 states and 757 transitions. [2020-12-23 16:56:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-12-23 16:56:59,444 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 123 [2020-12-23 16:56:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:59,447 INFO L225 Difference]: With dead ends: 732 [2020-12-23 16:56:59,448 INFO L226 Difference]: Without dead ends: 732 [2020-12-23 16:56:59,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4883, Invalid=11629, Unknown=0, NotChecked=0, Total=16512 [2020-12-23 16:56:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-23 16:56:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 181. [2020-12-23 16:56:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 16:56:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2020-12-23 16:56:59,456 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 123 [2020-12-23 16:56:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:59,456 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2020-12-23 16:56:59,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 16:56:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2020-12-23 16:56:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-23 16:56:59,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:59,458 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:59,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:59,674 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:56:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1056097030, now seen corresponding path program 1 times [2020-12-23 16:56:59,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:59,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349303919] [2020-12-23 16:56:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 16:57:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349303919] [2020-12-23 16:57:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141939923] [2020-12-23 16:57:00,260 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:00,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 16:57:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 16:57:00,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:00,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-23 16:57:00,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138288077] [2020-12-23 16:57:00,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 16:57:00,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:00,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 16:57:00,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:57:00,587 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand 29 states. [2020-12-23 16:57:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:01,192 INFO L93 Difference]: Finished difference Result 762 states and 788 transitions. [2020-12-23 16:57:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 16:57:01,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-12-23 16:57:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:01,195 INFO L225 Difference]: With dead ends: 762 [2020-12-23 16:57:01,195 INFO L226 Difference]: Without dead ends: 762 [2020-12-23 16:57:01,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:57:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-12-23 16:57:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 185. [2020-12-23 16:57:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 16:57:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2020-12-23 16:57:01,202 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 130 [2020-12-23 16:57:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:01,202 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2020-12-23 16:57:01,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 16:57:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2020-12-23 16:57:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-23 16:57:01,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:01,203 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:01,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 16:57:01,417 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1036178883, now seen corresponding path program 2 times [2020-12-23 16:57:01,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:01,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719541850] [2020-12-23 16:57:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 16:57:01,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719541850] [2020-12-23 16:57:01,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220463831] [2020-12-23 16:57:01,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:02,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:57:02,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:02,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 16:57:02,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 16:57:02,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:02,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-12-23 16:57:02,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405435108] [2020-12-23 16:57:02,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 16:57:02,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 16:57:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:57:02,271 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand 30 states. [2020-12-23 16:57:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:02,871 INFO L93 Difference]: Finished difference Result 792 states and 819 transitions. [2020-12-23 16:57:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 16:57:02,871 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2020-12-23 16:57:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:02,874 INFO L225 Difference]: With dead ends: 792 [2020-12-23 16:57:02,874 INFO L226 Difference]: Without dead ends: 792 [2020-12-23 16:57:02,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:57:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-12-23 16:57:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 189. [2020-12-23 16:57:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-23 16:57:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2020-12-23 16:57:02,880 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 134 [2020-12-23 16:57:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:02,881 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2020-12-23 16:57:02,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 16:57:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2020-12-23 16:57:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-23 16:57:02,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:02,882 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:03,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:03,097 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1554072064, now seen corresponding path program 3 times [2020-12-23 16:57:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:03,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249594375] [2020-12-23 16:57:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 16:57:03,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249594375] [2020-12-23 16:57:03,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285712610] [2020-12-23 16:57:03,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:03,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 16:57:03,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:03,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 16:57:03,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:04,087 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:57:04,103 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2020-12-23 16:57:04,104 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 23 [2020-12-23 16:57:04,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:04,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:04,117 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:04,117 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-23 16:57:04,534 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:57:04,560 INFO L348 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2020-12-23 16:57:04,561 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 24 [2020-12-23 16:57:04,575 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:04,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:04,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:04,587 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2020-12-23 16:57:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2020-12-23 16:57:04,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:04,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15] total 43 [2020-12-23 16:57:04,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651400195] [2020-12-23 16:57:04,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:57:04,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:04,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:57:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=1115, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:57:04,739 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 43 states. [2020-12-23 16:57:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:07,516 INFO L93 Difference]: Finished difference Result 820 states and 848 transitions. [2020-12-23 16:57:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 16:57:07,517 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 138 [2020-12-23 16:57:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:07,522 INFO L225 Difference]: With dead ends: 820 [2020-12-23 16:57:07,522 INFO L226 Difference]: Without dead ends: 820 [2020-12-23 16:57:07,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2336, Invalid=3984, Unknown=0, NotChecked=0, Total=6320 [2020-12-23 16:57:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-12-23 16:57:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 210. [2020-12-23 16:57:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-23 16:57:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 221 transitions. [2020-12-23 16:57:07,533 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 221 transitions. Word has length 138 [2020-12-23 16:57:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:07,533 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 221 transitions. [2020-12-23 16:57:07,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:57:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 221 transitions. [2020-12-23 16:57:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 16:57:07,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:07,534 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:07,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 16:57:07,747 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1013807770, now seen corresponding path program 5 times [2020-12-23 16:57:07,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:07,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517926129] [2020-12-23 16:57:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 16:57:08,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517926129] [2020-12-23 16:57:08,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608995429] [2020-12-23 16:57:08,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:09,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2020-12-23 16:57:09,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:09,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 16:57:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 16:57:09,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:09,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-12-23 16:57:09,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325532065] [2020-12-23 16:57:09,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 16:57:09,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:09,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 16:57:09,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-23 16:57:09,662 INFO L87 Difference]: Start difference. First operand 210 states and 221 transitions. Second operand 32 states. [2020-12-23 16:57:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:10,306 INFO L93 Difference]: Finished difference Result 850 states and 879 transitions. [2020-12-23 16:57:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:57:10,307 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 145 [2020-12-23 16:57:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:10,311 INFO L225 Difference]: With dead ends: 850 [2020-12-23 16:57:10,311 INFO L226 Difference]: Without dead ends: 850 [2020-12-23 16:57:10,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-23 16:57:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-12-23 16:57:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 214. [2020-12-23 16:57:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-23 16:57:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 225 transitions. [2020-12-23 16:57:10,319 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 225 transitions. Word has length 145 [2020-12-23 16:57:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:10,319 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 225 transitions. [2020-12-23 16:57:10,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 16:57:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 225 transitions. [2020-12-23 16:57:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-23 16:57:10,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:10,321 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:10,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:10,535 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1914177987, now seen corresponding path program 6 times [2020-12-23 16:57:10,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:10,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593971817] [2020-12-23 16:57:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 16:57:11,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593971817] [2020-12-23 16:57:11,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040113273] [2020-12-23 16:57:11,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:11,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-23 16:57:11,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:11,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:57:11,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:11,433 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-23 16:57:11,434 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:57:11,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:11,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:11,446 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:11,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2020-12-23 16:57:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2020-12-23 16:57:12,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:12,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 6] total 37 [2020-12-23 16:57:12,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914876682] [2020-12-23 16:57:12,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 16:57:12,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 16:57:12,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 16:57:12,142 INFO L87 Difference]: Start difference. First operand 214 states and 225 transitions. Second operand 37 states. [2020-12-23 16:57:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:23,448 INFO L93 Difference]: Finished difference Result 854 states and 884 transitions. [2020-12-23 16:57:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-12-23 16:57:23,451 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 149 [2020-12-23 16:57:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:23,454 INFO L225 Difference]: With dead ends: 854 [2020-12-23 16:57:23,454 INFO L226 Difference]: Without dead ends: 837 [2020-12-23 16:57:23,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8069 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=7131, Invalid=16739, Unknown=0, NotChecked=0, Total=23870 [2020-12-23 16:57:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-12-23 16:57:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 200. [2020-12-23 16:57:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-23 16:57:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 209 transitions. [2020-12-23 16:57:23,470 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 209 transitions. Word has length 149 [2020-12-23 16:57:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:23,470 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 209 transitions. [2020-12-23 16:57:23,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 16:57:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 209 transitions. [2020-12-23 16:57:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-23 16:57:23,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:23,472 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:23,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 16:57:23,686 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1416335279, now seen corresponding path program 4 times [2020-12-23 16:57:23,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:23,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394991977] [2020-12-23 16:57:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:57:24,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394991977] [2020-12-23 16:57:24,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665016017] [2020-12-23 16:57:24,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:26,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:57:26,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:26,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 16:57:26,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:57:26,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:26,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-12-23 16:57:26,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807761925] [2020-12-23 16:57:26,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 16:57:26,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 16:57:26,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:57:26,330 INFO L87 Difference]: Start difference. First operand 200 states and 209 transitions. Second operand 35 states. [2020-12-23 16:57:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:27,042 INFO L93 Difference]: Finished difference Result 772 states and 803 transitions. [2020-12-23 16:57:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 16:57:27,043 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 159 [2020-12-23 16:57:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:27,045 INFO L225 Difference]: With dead ends: 772 [2020-12-23 16:57:27,046 INFO L226 Difference]: Without dead ends: 772 [2020-12-23 16:57:27,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:57:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-23 16:57:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 204. [2020-12-23 16:57:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-12-23 16:57:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 213 transitions. [2020-12-23 16:57:27,052 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 213 transitions. Word has length 159 [2020-12-23 16:57:27,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:27,053 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 213 transitions. [2020-12-23 16:57:27,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 16:57:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 213 transitions. [2020-12-23 16:57:27,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-23 16:57:27,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:27,054 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:27,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:57:27,268 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:27,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash -724005394, now seen corresponding path program 5 times [2020-12-23 16:57:27,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:27,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691425757] [2020-12-23 16:57:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:57:28,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691425757] [2020-12-23 16:57:28,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143514121] [2020-12-23 16:57:28,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:38,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2020-12-23 16:57:38,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:38,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 16:57:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:57:38,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:38,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-12-23 16:57:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963606829] [2020-12-23 16:57:38,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 16:57:38,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 16:57:38,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 16:57:38,711 INFO L87 Difference]: Start difference. First operand 204 states and 213 transitions. Second operand 36 states. [2020-12-23 16:57:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:39,463 INFO L93 Difference]: Finished difference Result 797 states and 829 transitions. [2020-12-23 16:57:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 16:57:39,464 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 163 [2020-12-23 16:57:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:39,466 INFO L225 Difference]: With dead ends: 797 [2020-12-23 16:57:39,467 INFO L226 Difference]: Without dead ends: 797 [2020-12-23 16:57:39,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 16:57:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-12-23 16:57:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 208. [2020-12-23 16:57:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-23 16:57:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2020-12-23 16:57:39,473 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 163 [2020-12-23 16:57:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:39,474 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2020-12-23 16:57:39,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 16:57:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2020-12-23 16:57:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-23 16:57:39,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:39,475 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:39,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:57:39,689 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1567266059, now seen corresponding path program 6 times [2020-12-23 16:57:39,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:39,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068800058] [2020-12-23 16:57:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-23 16:57:40,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068800058] [2020-12-23 16:57:40,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662123954] [2020-12-23 16:57:40,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:40,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-23 16:57:40,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:40,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-23 16:57:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:40,829 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_27|]} [2020-12-23 16:57:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:40,836 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:57:40,837 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:40,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:40,859 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:57:40,860 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:40,872 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:40,873 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:40,873 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-12-23 16:57:41,122 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 15 [2020-12-23 16:57:41,124 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:41,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:18 [2020-12-23 16:57:41,326 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 23 [2020-12-23 16:57:41,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:41,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-23 16:57:41,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,442 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2020-12-23 16:57:41,444 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,459 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:41,460 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 16:57:41,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:41,550 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2020-12-23 16:57:41,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:41,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:41,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:56 [2020-12-23 16:57:42,143 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-12-23 16:57:42,145 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:42,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:42,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:42,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:3 [2020-12-23 16:57:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-12-23 16:57:42,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:42,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23] total 57 [2020-12-23 16:57:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822145393] [2020-12-23 16:57:42,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 16:57:42,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:42,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 16:57:42,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2041, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:57:42,473 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand 57 states. [2020-12-23 16:57:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:47,448 INFO L93 Difference]: Finished difference Result 815 states and 871 transitions. [2020-12-23 16:57:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-23 16:57:47,449 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 167 [2020-12-23 16:57:47,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:47,452 INFO L225 Difference]: With dead ends: 815 [2020-12-23 16:57:47,453 INFO L226 Difference]: Without dead ends: 815 [2020-12-23 16:57:47,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3818, Invalid=7954, Unknown=0, NotChecked=0, Total=11772 [2020-12-23 16:57:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-12-23 16:57:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 224. [2020-12-23 16:57:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-23 16:57:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2020-12-23 16:57:47,465 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 167 [2020-12-23 16:57:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:47,465 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions. [2020-12-23 16:57:47,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 16:57:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions. [2020-12-23 16:57:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-23 16:57:47,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:47,466 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:47,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 16:57:47,681 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash 250530360, now seen corresponding path program 7 times [2020-12-23 16:57:47,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:47,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412240031] [2020-12-23 16:57:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-23 16:57:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412240031] [2020-12-23 16:57:48,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487858530] [2020-12-23 16:57:48,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:48,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 16:57:48,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-23 16:57:49,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:49,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-12-23 16:57:49,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435104031] [2020-12-23 16:57:49,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 16:57:49,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 16:57:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:57:49,067 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand 39 states. [2020-12-23 16:57:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:49,947 INFO L93 Difference]: Finished difference Result 879 states and 914 transitions. [2020-12-23 16:57:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 16:57:49,948 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 180 [2020-12-23 16:57:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:49,951 INFO L225 Difference]: With dead ends: 879 [2020-12-23 16:57:49,951 INFO L226 Difference]: Without dead ends: 879 [2020-12-23 16:57:49,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:57:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-23 16:57:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 228. [2020-12-23 16:57:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-23 16:57:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 237 transitions. [2020-12-23 16:57:49,965 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 237 transitions. Word has length 180 [2020-12-23 16:57:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:49,965 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 237 transitions. [2020-12-23 16:57:49,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 16:57:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 237 transitions. [2020-12-23 16:57:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-23 16:57:49,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:49,966 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:50,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 16:57:50,180 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1101905733, now seen corresponding path program 8 times [2020-12-23 16:57:50,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:50,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801438002] [2020-12-23 16:57:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-23 16:57:51,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801438002] [2020-12-23 16:57:51,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677900675] [2020-12-23 16:57:51,253 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:51,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:57:51,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:51,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 16:57:51,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-23 16:57:51,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:51,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-12-23 16:57:51,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840929360] [2020-12-23 16:57:51,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 16:57:51,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:51,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 16:57:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 16:57:51,661 INFO L87 Difference]: Start difference. First operand 228 states and 237 transitions. Second operand 40 states. [2020-12-23 16:57:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:57:52,501 INFO L93 Difference]: Finished difference Result 904 states and 940 transitions. [2020-12-23 16:57:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 16:57:52,502 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 184 [2020-12-23 16:57:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:57:52,505 INFO L225 Difference]: With dead ends: 904 [2020-12-23 16:57:52,505 INFO L226 Difference]: Without dead ends: 904 [2020-12-23 16:57:52,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 16:57:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-12-23 16:57:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 232. [2020-12-23 16:57:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-23 16:57:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions. [2020-12-23 16:57:52,513 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 184 [2020-12-23 16:57:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:57:52,514 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions. [2020-12-23 16:57:52,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 16:57:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions. [2020-12-23 16:57:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-23 16:57:52,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:57:52,515 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:57:52,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 16:57:52,730 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:57:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:57:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468610, now seen corresponding path program 9 times [2020-12-23 16:57:52,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:57:52,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266405126] [2020-12-23 16:57:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:57:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:57:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-23 16:57:53,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266405126] [2020-12-23 16:57:53,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050910889] [2020-12-23 16:57:53,873 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:57:53,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 16:57:53,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:57:53,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 16:57:53,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:57:53,992 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:57:53,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:54,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 16:57:54,328 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 23 [2020-12-23 16:57:54,329 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:54,342 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-23 16:57:54,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:54,441 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-23 16:57:54,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:54,462 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2020-12-23 16:57:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:57:54,534 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-23 16:57:54,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:54,550 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2020-12-23 16:57:54,917 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 26 treesize of output 10 [2020-12-23 16:57:54,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:54,925 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:54,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2020-12-23 16:57:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2020-12-23 16:57:55,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:55,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 16] total 54 [2020-12-23 16:57:55,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909050918] [2020-12-23 16:57:55,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-23 16:57:55,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:55,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-23 16:57:55,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=1885, Unknown=0, NotChecked=0, Total=2862 [2020-12-23 16:57:55,127 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand 54 states. [2020-12-23 16:58:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:25,219 INFO L93 Difference]: Finished difference Result 1390 states and 1427 transitions. [2020-12-23 16:58:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 332 states. [2020-12-23 16:58:25,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 188 [2020-12-23 16:58:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:25,224 INFO L225 Difference]: With dead ends: 1390 [2020-12-23 16:58:25,224 INFO L226 Difference]: Without dead ends: 1390 [2020-12-23 16:58:25,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63209 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=31135, Invalid=112127, Unknown=0, NotChecked=0, Total=143262 [2020-12-23 16:58:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-12-23 16:58:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 235. [2020-12-23 16:58:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 16:58:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 244 transitions. [2020-12-23 16:58:25,238 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 244 transitions. Word has length 188 [2020-12-23 16:58:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:25,239 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 244 transitions. [2020-12-23 16:58:25,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-23 16:58:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 244 transitions. [2020-12-23 16:58:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-23 16:58:25,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:25,240 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:25,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-12-23 16:58:25,454 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2095452112, now seen corresponding path program 10 times [2020-12-23 16:58:25,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:25,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256284582] [2020-12-23 16:58:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-23 16:58:26,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256284582] [2020-12-23 16:58:26,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790929265] [2020-12-23 16:58:26,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:26,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:58:26,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:58:26,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 16:58:26,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:58:27,046 INFO L348 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2020-12-23 16:58:27,046 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 19 treesize of output 19 [2020-12-23 16:58:27,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:27,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:27,050 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:27,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-23 16:58:27,443 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:27,444 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2020-12-23 16:58:27,445 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:58:27,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:58:27,448 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:58:27,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2020-12-23 16:58:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2020-12-23 16:58:27,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:58:27,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 14] total 52 [2020-12-23 16:58:27,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301928517] [2020-12-23 16:58:27,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-23 16:58:27,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:58:27,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-23 16:58:27,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1692, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 16:58:27,607 INFO L87 Difference]: Start difference. First operand 235 states and 244 transitions. Second operand 52 states. [2020-12-23 16:58:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:58:29,315 INFO L93 Difference]: Finished difference Result 1219 states and 1257 transitions. [2020-12-23 16:58:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-12-23 16:58:29,316 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 194 [2020-12-23 16:58:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:58:29,320 INFO L225 Difference]: With dead ends: 1219 [2020-12-23 16:58:29,320 INFO L226 Difference]: Without dead ends: 1219 [2020-12-23 16:58:29,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1520, Invalid=2640, Unknown=0, NotChecked=0, Total=4160 [2020-12-23 16:58:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-23 16:58:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 247. [2020-12-23 16:58:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-23 16:58:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 256 transitions. [2020-12-23 16:58:29,328 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 256 transitions. Word has length 194 [2020-12-23 16:58:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:58:29,328 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 256 transitions. [2020-12-23 16:58:29,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-23 16:58:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 256 transitions. [2020-12-23 16:58:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-23 16:58:29,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:58:29,330 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:58:29,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:58:29,544 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:58:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:58:29,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1664208648, now seen corresponding path program 11 times [2020-12-23 16:58:29,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:58:29,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907114647] [2020-12-23 16:58:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:58:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:58:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-23 16:58:31,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907114647] [2020-12-23 16:58:31,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937522395] [2020-12-23 16:58:31,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:59:28,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2020-12-23 16:59:28,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:59:28,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 16:59:28,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-23 16:59:28,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:28,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-12-23 16:59:28,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339324492] [2020-12-23 16:59:28,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:59:28,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:59:28,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:59:28,846 INFO L87 Difference]: Start difference. First operand 247 states and 256 transitions. Second operand 43 states. [2020-12-23 16:59:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:30,091 INFO L93 Difference]: Finished difference Result 1245 states and 1284 transitions. [2020-12-23 16:59:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 16:59:30,092 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2020-12-23 16:59:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:30,096 INFO L225 Difference]: With dead ends: 1245 [2020-12-23 16:59:30,096 INFO L226 Difference]: Without dead ends: 1245 [2020-12-23 16:59:30,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:59:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-12-23 16:59:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 251. [2020-12-23 16:59:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-23 16:59:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 260 transitions. [2020-12-23 16:59:30,104 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 260 transitions. Word has length 203 [2020-12-23 16:59:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:30,105 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 260 transitions. [2020-12-23 16:59:30,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:59:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 260 transitions. [2020-12-23 16:59:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-23 16:59:30,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:30,106 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:30,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:59:30,307 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:59:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:30,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1055541979, now seen corresponding path program 12 times [2020-12-23 16:59:30,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:30,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122927574] [2020-12-23 16:59:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-23 16:59:32,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122927574] [2020-12-23 16:59:32,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218279814] [2020-12-23 16:59:32,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:59:32,400 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 16:59:32,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:59:32,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 16:59:32,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:59:32,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:59:32,421 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:32,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:32,430 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:32,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 16:59:32,917 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 23 [2020-12-23 16:59:32,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:32,937 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:32,938 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:32,938 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-23 16:59:33,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:59:33,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2020-12-23 16:59:33,089 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:33,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:33,111 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:33,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2020-12-23 16:59:33,746 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 26 treesize of output 10 [2020-12-23 16:59:33,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:59:33,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:59:33,758 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:59:33,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2020-12-23 16:59:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2020-12-23 16:59:34,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:59:34,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 17] total 58 [2020-12-23 16:59:34,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689927596] [2020-12-23 16:59:34,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-12-23 16:59:34,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-12-23 16:59:34,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2155, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 16:59:34,008 INFO L87 Difference]: Start difference. First operand 251 states and 260 transitions. Second operand 58 states.