/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/ldv-memsafety/ArraysOfVariableLength2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:10:04,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:10:04,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:10:04,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:10:04,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:10:04,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:10:04,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:10:04,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:10:04,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:10:04,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:10:04,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:10:04,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:10:04,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:10:04,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:10:04,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:10:04,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:10:04,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:10:04,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:10:04,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:10:04,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:10:04,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:10:04,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:10:04,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:10:04,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:10:04,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:10:04,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:10:04,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:10:04,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:10:04,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:10:04,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:10:04,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:10:04,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:10:04,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:10:04,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:10:04,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:10:04,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:10:04,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:10:04,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:10:04,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:10:04,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:10:04,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:10:04,705 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:10:04,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:10:04,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:10:04,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:10:04,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:10:04,707 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:10:04,708 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:10:04,709 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:10:04,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:10:04,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:10:04,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:10:04,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:10:04,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:10:04,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:10:04,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:10:04,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:10:04,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:10:04,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:10:04,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:10:04,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:10:04,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:10:05,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:10:05,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:10:05,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:10:05,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:10:05,222 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:10:05,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-12-23 17:10:05,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38e666cc4/ba60722a8434421dabb391961c13586a/FLAG738e5f377 [2020-12-23 17:10:05,992 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:10:05,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-12-23 17:10:06,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38e666cc4/ba60722a8434421dabb391961c13586a/FLAG738e5f377 [2020-12-23 17:10:06,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38e666cc4/ba60722a8434421dabb391961c13586a [2020-12-23 17:10:06,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:10:06,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:10:06,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:10:06,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:10:06,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:10:06,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b150738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06, skipping insertion in model container [2020-12-23 17:10:06,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:10:06,429 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: VariableLHS[~i~2,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~b~0,],[IdentifierExpression[~i~2,]]] left hand side expression in assignment: lhs: VariableLHS[~i~2,] [2020-12-23 17:10:06,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:10:06,698 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~1,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~2,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~2,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~2,] [2020-12-23 17:10:06,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:10:06,761 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:10:06,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06 WrapperNode [2020-12-23 17:10:06,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:10:06,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:10:06,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:10:06,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:10:06,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:10:06,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:10:06,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:10:06,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:10:06,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... [2020-12-23 17:10:06,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:10:06,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:10:06,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:10:06,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:10:06,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:10:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:10:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:10:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:10:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:10:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:10:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:10:07,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:10:07,486 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 17:10:07,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:10:07 BoogieIcfgContainer [2020-12-23 17:10:07,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:10:07,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:10:07,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:10:07,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:10:07,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:10:06" (1/3) ... [2020-12-23 17:10:07,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691d4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:10:07, skipping insertion in model container [2020-12-23 17:10:07,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:06" (2/3) ... [2020-12-23 17:10:07,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691d4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:10:07, skipping insertion in model container [2020-12-23 17:10:07,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:10:07" (3/3) ... [2020-12-23 17:10:07,514 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2020-12-23 17:10:07,528 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:10:07,541 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 17:10:07,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 17:10:07,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:10:07,615 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:10:07,616 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:10:07,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:10:07,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:10:07,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:10:07,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:10:07,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:10:07,633 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-23 17:10:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:10:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:07,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:10:07,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:07,648 INFO L82 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2020-12-23 17:10:07,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:07,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516393835] [2020-12-23 17:10:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:07,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516393835] [2020-12-23 17:10:07,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:07,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:10:07,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115892661] [2020-12-23 17:10:07,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:07,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:07,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:07,912 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-12-23 17:10:08,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,109 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-23 17:10:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:08,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 17:10:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,124 INFO L225 Difference]: With dead ends: 69 [2020-12-23 17:10:08,124 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 17:10:08,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 17:10:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-12-23 17:10:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 17:10:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-23 17:10:08,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 5 [2020-12-23 17:10:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,172 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-23 17:10:08,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-23 17:10:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:10:08,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:10:08,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811544, now seen corresponding path program 1 times [2020-12-23 17:10:08,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913989839] [2020-12-23 17:10:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:08,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913989839] [2020-12-23 17:10:08,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:08,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:10:08,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372365702] [2020-12-23 17:10:08,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:10:08,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:10:08,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,261 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-12-23 17:10:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,536 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-12-23 17:10:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:10:08,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 17:10:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,544 INFO L225 Difference]: With dead ends: 70 [2020-12-23 17:10:08,544 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 17:10:08,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:10:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 17:10:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2020-12-23 17:10:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 17:10:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-23 17:10:08,564 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 7 [2020-12-23 17:10:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,565 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-23 17:10:08,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:10:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-23 17:10:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 17:10:08,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:10:08,568 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,571 INFO L82 PathProgramCache]: Analyzing trace with hash -489510905, now seen corresponding path program 1 times [2020-12-23 17:10:08,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318392570] [2020-12-23 17:10:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:08,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318392570] [2020-12-23 17:10:08,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:08,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:10:08,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043796390] [2020-12-23 17:10:08,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:10:08,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:10:08,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,734 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-23 17:10:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,869 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-12-23 17:10:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:08,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 17:10:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,875 INFO L225 Difference]: With dead ends: 75 [2020-12-23 17:10:08,875 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 17:10:08,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:10:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 17:10:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 45. [2020-12-23 17:10:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 17:10:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-12-23 17:10:08,884 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 11 [2020-12-23 17:10:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,885 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-12-23 17:10:08,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:10:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-12-23 17:10:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 17:10:08,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:10:08,890 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,891 INFO L82 PathProgramCache]: Analyzing trace with hash -489508983, now seen corresponding path program 1 times [2020-12-23 17:10:08,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648885682] [2020-12-23 17:10:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:08,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648885682] [2020-12-23 17:10:08,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:08,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:10:08,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225230375] [2020-12-23 17:10:08,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:08,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:08,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:08,968 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2020-12-23 17:10:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:09,030 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-12-23 17:10:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:09,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 17:10:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:09,032 INFO L225 Difference]: With dead ends: 43 [2020-12-23 17:10:09,032 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 17:10:09,033 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 17:10:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 17:10:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 17:10:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:10:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-23 17:10:09,038 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2020-12-23 17:10:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:09,039 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-23 17:10:09,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-23 17:10:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 17:10:09,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:09,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:09,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:10:09,040 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:09,041 INFO L82 PathProgramCache]: Analyzing trace with hash -489508982, now seen corresponding path program 1 times [2020-12-23 17:10:09,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:09,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373457926] [2020-12-23 17:10:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373457926] [2020-12-23 17:10:09,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:09,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:10:09,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064937765] [2020-12-23 17:10:09,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:10:09,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:10:09,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:09,138 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2020-12-23 17:10:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:09,265 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-12-23 17:10:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:09,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 17:10:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:09,267 INFO L225 Difference]: With dead ends: 50 [2020-12-23 17:10:09,267 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 17:10:09,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 17:10:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-23 17:10:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 17:10:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-12-23 17:10:09,272 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 11 [2020-12-23 17:10:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:09,272 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-12-23 17:10:09,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:10:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-12-23 17:10:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:10:09,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:09,274 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:09,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:10:09,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1675839934, now seen corresponding path program 1 times [2020-12-23 17:10:09,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:09,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792293374] [2020-12-23 17:10:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792293374] [2020-12-23 17:10:09,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:09,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:10:09,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174224383] [2020-12-23 17:10:09,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:09,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:09,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:09,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:09,348 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 4 states. [2020-12-23 17:10:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:09,406 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-12-23 17:10:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:09,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 17:10:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:09,409 INFO L225 Difference]: With dead ends: 47 [2020-12-23 17:10:09,409 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 17:10:09,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 17:10:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 17:10:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 17:10:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-12-23 17:10:09,419 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 16 [2020-12-23 17:10:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:09,419 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-12-23 17:10:09,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-12-23 17:10:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:10:09,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:09,421 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:09,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:10:09,422 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1675839933, now seen corresponding path program 1 times [2020-12-23 17:10:09,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:09,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425159776] [2020-12-23 17:10:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,584 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 17:10:09,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425159776] [2020-12-23 17:10:09,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212512593] [2020-12-23 17:10:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 17:10:09,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:09,893 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:09,894 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 39 [2020-12-23 17:10:09,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:09,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:09,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:09,920 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:09,964 INFO L625 ElimStorePlain]: treesize reduction 40, result has 42.0 percent of original size [2020-12-23 17:10:09,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:09,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2020-12-23 17:10:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:10,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:10,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-23 17:10:10,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891964905] [2020-12-23 17:10:10,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:10:10,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:10,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:10:10,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:10:10,028 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 10 states. [2020-12-23 17:10:11,999 WARN L197 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-12-23 17:10:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:12,194 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-12-23 17:10:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 17:10:12,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-23 17:10:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:12,195 INFO L225 Difference]: With dead ends: 90 [2020-12-23 17:10:12,195 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 17:10:12,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:10:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 17:10:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 48. [2020-12-23 17:10:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 17:10:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-12-23 17:10:12,201 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 16 [2020-12-23 17:10:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:12,201 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-12-23 17:10:12,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:10:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-12-23 17:10:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:10:12,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:12,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:12,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 17:10:12,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash -411430410, now seen corresponding path program 1 times [2020-12-23 17:10:12,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:12,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901261110] [2020-12-23 17:10:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:12,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901261110] [2020-12-23 17:10:12,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:12,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:10:12,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695083443] [2020-12-23 17:10:12,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:10:12,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:10:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:12,477 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 3 states. [2020-12-23 17:10:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:12,519 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-23 17:10:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:10:12,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:10:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:12,520 INFO L225 Difference]: With dead ends: 47 [2020-12-23 17:10:12,520 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 17:10:12,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 17:10:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 17:10:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 17:10:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-23 17:10:12,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 17 [2020-12-23 17:10:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:12,525 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-23 17:10:12,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:10:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-23 17:10:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:10:12,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:12,526 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:12,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:10:12,526 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash -411430409, now seen corresponding path program 1 times [2020-12-23 17:10:12,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:12,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922906357] [2020-12-23 17:10:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:12,584 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 17:10:12,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922906357] [2020-12-23 17:10:12,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214597041] [2020-12-23 17:10:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:12,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:10:12,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:12,696 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 17:10:12,697 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:12,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:12,711 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:12,711 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-23 17:10:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:12,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:12,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-23 17:10:12,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898226744] [2020-12-23 17:10:12,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:10:12,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:10:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:10:12,744 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-23 17:10:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:12,879 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-23 17:10:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:12,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-23 17:10:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:12,882 INFO L225 Difference]: With dead ends: 66 [2020-12-23 17:10:12,883 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 17:10:12,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:10:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 17:10:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-12-23 17:10:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 17:10:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-12-23 17:10:12,888 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 17 [2020-12-23 17:10:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:12,888 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-12-23 17:10:12,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:10:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-12-23 17:10:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:10:12,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:12,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:13,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash 130511665, now seen corresponding path program 1 times [2020-12-23 17:10:13,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261665632] [2020-12-23 17:10:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:13,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261665632] [2020-12-23 17:10:13,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:13,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:10:13,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80477112] [2020-12-23 17:10:13,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:13,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:13,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:13,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:13,168 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 4 states. [2020-12-23 17:10:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:13,222 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-23 17:10:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:13,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-23 17:10:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:13,224 INFO L225 Difference]: With dead ends: 47 [2020-12-23 17:10:13,224 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 17:10:13,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 17:10:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 17:10:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 17:10:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-23 17:10:13,228 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 18 [2020-12-23 17:10:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:13,229 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-23 17:10:13,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-23 17:10:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:10:13,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:13,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:13,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:10:13,232 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:13,233 INFO L82 PathProgramCache]: Analyzing trace with hash 130511666, now seen corresponding path program 1 times [2020-12-23 17:10:13,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:13,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123669617] [2020-12-23 17:10:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:13,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123669617] [2020-12-23 17:10:13,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946706457] [2020-12-23 17:10:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:10:13,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:13,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:13,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-23 17:10:13,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881973131] [2020-12-23 17:10:13,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:10:13,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:13,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:10:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:10:13,455 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-23 17:10:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:13,530 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-12-23 17:10:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:13,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 17:10:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:13,531 INFO L225 Difference]: With dead ends: 51 [2020-12-23 17:10:13,531 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 17:10:13,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:10:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 17:10:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-12-23 17:10:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 17:10:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-12-23 17:10:13,535 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 18 [2020-12-23 17:10:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:13,535 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-12-23 17:10:13,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:10:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-12-23 17:10:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:10:13,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:13,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:13,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 17:10:13,751 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:13,753 INFO L82 PathProgramCache]: Analyzing trace with hash 624099572, now seen corresponding path program 1 times [2020-12-23 17:10:13,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:13,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133911903] [2020-12-23 17:10:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:13,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133911903] [2020-12-23 17:10:13,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561393967] [2020-12-23 17:10:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 17:10:13,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:13,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:13,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 17:10:13,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566345] [2020-12-23 17:10:13,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:10:13,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:13,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:10:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:13,862 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 5 states. [2020-12-23 17:10:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:13,892 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-12-23 17:10:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:13,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 17:10:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:13,894 INFO L225 Difference]: With dead ends: 78 [2020-12-23 17:10:13,894 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 17:10:13,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 17:10:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-12-23 17:10:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:10:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 17:10:13,898 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 20 [2020-12-23 17:10:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:13,898 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 17:10:13,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:10:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 17:10:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:10:13,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:13,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:14,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:14,115 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:14,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1752050598, now seen corresponding path program 1 times [2020-12-23 17:10:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:14,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946572182] [2020-12-23 17:10:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946572182] [2020-12-23 17:10:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351287773] [2020-12-23 17:10:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:14,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:10:14,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:14,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:14,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 17:10:14,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925789166] [2020-12-23 17:10:14,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:10:14,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:10:14,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:14,331 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-23 17:10:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:14,532 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-12-23 17:10:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:10:14,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-12-23 17:10:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:14,533 INFO L225 Difference]: With dead ends: 82 [2020-12-23 17:10:14,533 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 17:10:14,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:10:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 17:10:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-12-23 17:10:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 17:10:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-12-23 17:10:14,537 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 21 [2020-12-23 17:10:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:14,538 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-12-23 17:10:14,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:10:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-12-23 17:10:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:10:14,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:14,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:14,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 17:10:14,753 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -93493367, now seen corresponding path program 1 times [2020-12-23 17:10:14,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:14,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279158049] [2020-12-23 17:10:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:14,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279158049] [2020-12-23 17:10:14,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738664385] [2020-12-23 17:10:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:14,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 17:10:14,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:14,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:14,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-12-23 17:10:14,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197943480] [2020-12-23 17:10:14,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:10:14,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:10:14,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:14,985 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 9 states. [2020-12-23 17:10:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:15,164 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-12-23 17:10:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:10:15,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-23 17:10:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:15,165 INFO L225 Difference]: With dead ends: 74 [2020-12-23 17:10:15,166 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 17:10:15,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:10:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 17:10:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2020-12-23 17:10:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 17:10:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-23 17:10:15,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 23 [2020-12-23 17:10:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:15,170 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-23 17:10:15,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:10:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-23 17:10:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:10:15,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:15,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:15,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:15,385 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1409452358, now seen corresponding path program 1 times [2020-12-23 17:10:15,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:15,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071153883] [2020-12-23 17:10:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:15,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071153883] [2020-12-23 17:10:15,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462772987] [2020-12-23 17:10:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:15,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:10:15,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:15,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:15,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 17:10:15,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955918148] [2020-12-23 17:10:15,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:10:15,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:15,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:10:15,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:15,583 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 9 states. [2020-12-23 17:10:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:15,723 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-23 17:10:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:10:15,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-23 17:10:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:15,724 INFO L225 Difference]: With dead ends: 56 [2020-12-23 17:10:15,725 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 17:10:15,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:10:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 17:10:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-12-23 17:10:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 17:10:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 17:10:15,735 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 27 [2020-12-23 17:10:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:15,735 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 17:10:15,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:10:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 17:10:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:10:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:15,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:15,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 17:10:15,953 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:15,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1360755252, now seen corresponding path program 1 times [2020-12-23 17:10:15,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:15,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677595702] [2020-12-23 17:10:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:16,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677595702] [2020-12-23 17:10:16,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733890543] [2020-12-23 17:10:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:16,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 17:10:16,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:16,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:16,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 17:10:16,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161544480] [2020-12-23 17:10:16,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:10:16,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:10:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:10:16,209 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 10 states. [2020-12-23 17:10:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:16,496 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-23 17:10:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 17:10:16,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-12-23 17:10:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:16,497 INFO L225 Difference]: With dead ends: 87 [2020-12-23 17:10:16,497 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 17:10:16,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:10:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 17:10:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-12-23 17:10:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 17:10:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-12-23 17:10:16,501 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 27 [2020-12-23 17:10:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:16,501 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-12-23 17:10:16,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:10:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-12-23 17:10:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:10:16,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:16,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:16,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 17:10:16,717 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:16,718 INFO L82 PathProgramCache]: Analyzing trace with hash -144329733, now seen corresponding path program 1 times [2020-12-23 17:10:16,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:16,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113940484] [2020-12-23 17:10:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:16,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113940484] [2020-12-23 17:10:16,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482083728] [2020-12-23 17:10:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:17,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 17:10:17,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:17,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:10:17,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:17,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:17,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:17,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-23 17:10:17,202 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-23 17:10:17,203 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 18 [2020-12-23 17:10:17,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:17,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:17,215 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:17,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2020-12-23 17:10:17,279 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 17:10:17,287 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:17,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:17,292 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 17:10:17,292 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-12-23 17:10:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:17,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:17,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 21 [2020-12-23 17:10:17,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697993131] [2020-12-23 17:10:17,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 17:10:17,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 17:10:17,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-12-23 17:10:17,387 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 21 states. [2020-12-23 17:10:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:19,011 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2020-12-23 17:10:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 17:10:19,012 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 31 [2020-12-23 17:10:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:19,013 INFO L225 Difference]: With dead ends: 131 [2020-12-23 17:10:19,013 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 17:10:19,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2020-12-23 17:10:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 17:10:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2020-12-23 17:10:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 17:10:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-12-23 17:10:19,020 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 31 [2020-12-23 17:10:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:19,020 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-12-23 17:10:19,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 17:10:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-12-23 17:10:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 17:10:19,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:19,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:19,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 17:10:19,236 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1886210463, now seen corresponding path program 1 times [2020-12-23 17:10:19,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:19,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63449627] [2020-12-23 17:10:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63449627] [2020-12-23 17:10:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407086878] [2020-12-23 17:10:19,311 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:19,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 17:10:19,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:19,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:19,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 17:10:19,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125074806] [2020-12-23 17:10:19,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:10:19,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:19,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:10:19,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:19,447 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 6 states. [2020-12-23 17:10:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:19,483 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-12-23 17:10:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:19,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-23 17:10:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:19,484 INFO L225 Difference]: With dead ends: 106 [2020-12-23 17:10:19,484 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 17:10:19,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 17:10:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2020-12-23 17:10:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 17:10:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-12-23 17:10:19,488 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 40 [2020-12-23 17:10:19,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:19,488 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-12-23 17:10:19,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:10:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-12-23 17:10:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 17:10:19,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:19,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:19,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 17:10:19,703 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2032716941, now seen corresponding path program 1 times [2020-12-23 17:10:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:19,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122163420] [2020-12-23 17:10:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:19,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122163420] [2020-12-23 17:10:19,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463076336] [2020-12-23 17:10:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 17:10:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:20,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:10:20,049 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2020-12-23 17:10:20,051 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:20,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:20,075 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:20,075 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-12-23 17:10:20,078 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:20,080 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:20,083 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:20,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:20,097 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:20,098 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:30 [2020-12-23 17:10:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:20,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:20,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2020-12-23 17:10:20,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950143038] [2020-12-23 17:10:20,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:10:20,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:20,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:10:20,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:10:20,226 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 13 states. [2020-12-23 17:10:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:21,009 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-12-23 17:10:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 17:10:21,009 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-12-23 17:10:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:21,010 INFO L225 Difference]: With dead ends: 115 [2020-12-23 17:10:21,011 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 17:10:21,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-23 17:10:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 17:10:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-12-23 17:10:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 17:10:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-23 17:10:21,015 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 41 [2020-12-23 17:10:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:21,015 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-23 17:10:21,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:10:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-23 17:10:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 17:10:21,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:21,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:21,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:21,230 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:21,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1410284307, now seen corresponding path program 1 times [2020-12-23 17:10:21,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:21,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734377955] [2020-12-23 17:10:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:21,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734377955] [2020-12-23 17:10:21,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474172867] [2020-12-23 17:10:21,351 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:21,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 17:10:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:21,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 17:10:21,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:21,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:21,517 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:21,518 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-23 17:10:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:21,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:21,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 17:10:21,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913273907] [2020-12-23 17:10:21,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:10:21,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:21,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:10:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:10:21,599 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 10 states. [2020-12-23 17:10:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:21,809 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2020-12-23 17:10:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:10:21,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-23 17:10:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:21,811 INFO L225 Difference]: With dead ends: 101 [2020-12-23 17:10:21,811 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 17:10:21,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:10:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 17:10:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-12-23 17:10:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 17:10:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-12-23 17:10:21,816 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 42 [2020-12-23 17:10:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:21,817 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-12-23 17:10:21,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:10:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-12-23 17:10:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 17:10:21,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:21,818 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:22,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:22,032 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash 183114832, now seen corresponding path program 2 times [2020-12-23 17:10:22,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:22,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773803903] [2020-12-23 17:10:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:22,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773803903] [2020-12-23 17:10:22,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239643634] [2020-12-23 17:10:22,133 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 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 17:10:22,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:10:22,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:22,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 17:10:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:10:22,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:22,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-23 17:10:22,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803195513] [2020-12-23 17:10:22,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:10:22,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:10:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:10:22,329 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 12 states. [2020-12-23 17:10:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:22,698 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-12-23 17:10:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 17:10:22,698 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-12-23 17:10:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:22,699 INFO L225 Difference]: With dead ends: 138 [2020-12-23 17:10:22,700 INFO L226 Difference]: Without dead ends: 138 [2020-12-23 17:10:22,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:10:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-23 17:10:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 93. [2020-12-23 17:10:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 17:10:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-12-23 17:10:22,703 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 46 [2020-12-23 17:10:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:22,704 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-12-23 17:10:22,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:10:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-12-23 17:10:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 17:10:22,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:22,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-23 17:10:22,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 17:10:22,921 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash 457132991, now seen corresponding path program 2 times [2020-12-23 17:10:22,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:22,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250224514] [2020-12-23 17:10:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:10:23,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250224514] [2020-12-23 17:10:23,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646409274] [2020-12-23 17:10:23,001 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 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 17:10:23,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:10:23,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:23,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:10:23,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:10:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:23,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 17:10:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085490267] [2020-12-23 17:10:23,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:10:23,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:10:23,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:10:23,179 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 10 states. [2020-12-23 17:10:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:23,354 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-12-23 17:10:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:10:23,355 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-12-23 17:10:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:23,356 INFO L225 Difference]: With dead ends: 86 [2020-12-23 17:10:23,356 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 17:10:23,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-23 17:10:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 17:10:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-12-23 17:10:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 17:10:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-12-23 17:10:23,359 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 47 [2020-12-23 17:10:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:23,359 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-12-23 17:10:23,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:10:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-12-23 17:10:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 17:10:23,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:23,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-23 17:10:23,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:23,570 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:23,571 INFO L82 PathProgramCache]: Analyzing trace with hash -269976254, now seen corresponding path program 3 times [2020-12-23 17:10:23,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:23,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836928005] [2020-12-23 17:10:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-23 17:10:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836928005] [2020-12-23 17:10:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079102131] [2020-12-23 17:10:23,727 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 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 17:10:23,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 17:10:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:23,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 17:10:23,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:23,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 17:10:23,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:23,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:23,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:23,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:22 [2020-12-23 17:10:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-23 17:10:24,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:24,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-12-23 17:10:24,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898190331] [2020-12-23 17:10:24,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:10:24,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:24,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:10:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:10:24,023 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 11 states. [2020-12-23 17:10:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:24,705 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2020-12-23 17:10:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 17:10:24,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-12-23 17:10:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:24,707 INFO L225 Difference]: With dead ends: 102 [2020-12-23 17:10:24,707 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 17:10:24,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-12-23 17:10:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 17:10:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2020-12-23 17:10:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 17:10:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-12-23 17:10:24,710 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 52 [2020-12-23 17:10:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:24,710 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-12-23 17:10:24,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:10:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-12-23 17:10:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 17:10:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:24,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 17:10:24,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 17:10:24,920 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1642790799, now seen corresponding path program 2 times [2020-12-23 17:10:24,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:24,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45694130] [2020-12-23 17:10:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 17:10:25,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45694130] [2020-12-23 17:10:25,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512599847] [2020-12-23 17:10:25,033 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 17:10:25,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:10:25,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:25,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:10:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 17:10:25,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:25,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-23 17:10:25,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495739051] [2020-12-23 17:10:25,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:10:25,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:10:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:10:25,276 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 12 states. [2020-12-23 17:10:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:25,494 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-12-23 17:10:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 17:10:25,495 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-12-23 17:10:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:25,496 INFO L225 Difference]: With dead ends: 89 [2020-12-23 17:10:25,496 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 17:10:25,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:10:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 17:10:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-12-23 17:10:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 17:10:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-12-23 17:10:25,500 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 56 [2020-12-23 17:10:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:25,500 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-12-23 17:10:25,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:10:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-12-23 17:10:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 17:10:25,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:25,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-23 17:10:25,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:25,715 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:25,716 INFO L82 PathProgramCache]: Analyzing trace with hash 74449076, now seen corresponding path program 3 times [2020-12-23 17:10:25,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:25,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815018821] [2020-12-23 17:10:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 17:10:26,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815018821] [2020-12-23 17:10:26,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139122032] [2020-12-23 17:10:26,118 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 17:10:26,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 17:10:26,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 17:10:26,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:26,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:10:26,234 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,246 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:10:26,246 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,254 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,254 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-12-23 17:10:26,289 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_21|], 3=[|v_#valid_29|]} [2020-12-23 17:10:26,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:10:26,295 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-23 17:10:26,296 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,333 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:10:26,337 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:26,343 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,365 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,365 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:35 [2020-12-23 17:10:26,449 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:10:26,451 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,478 INFO L625 ElimStorePlain]: treesize reduction 4, result has 88.6 percent of original size [2020-12-23 17:10:26,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:26,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:31 [2020-12-23 17:10:26,650 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 58 [2020-12-23 17:10:26,655 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,725 INFO L625 ElimStorePlain]: treesize reduction 24, result has 69.6 percent of original size [2020-12-23 17:10:26,760 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:26,761 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-23 17:10:26,771 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:26,858 INFO L625 ElimStorePlain]: treesize reduction 28, result has 66.7 percent of original size [2020-12-23 17:10:26,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:26,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:26,864 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:48, output treesize:58 [2020-12-23 17:10:26,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:26,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:27,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:27,212 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-23 17:10:27,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:27,360 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:10:27,362 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:27,371 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-23 17:10:27,373 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:27,450 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.5 percent of original size [2020-12-23 17:10:27,453 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-12-23 17:10:27,453 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:69 [2020-12-23 17:10:27,702 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:27,702 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2020-12-23 17:10:27,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:27,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:27,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:27,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:27,747 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:27,747 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 44 [2020-12-23 17:10:27,753 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:27,803 INFO L625 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2020-12-23 17:10:27,805 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:27,806 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:42 [2020-12-23 17:10:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 17:10:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:28,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2020-12-23 17:10:28,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011765037] [2020-12-23 17:10:28,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 17:10:28,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 17:10:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-12-23 17:10:28,122 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 24 states. [2020-12-23 17:10:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:29,571 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-12-23 17:10:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:10:29,572 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 60 [2020-12-23 17:10:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:29,573 INFO L225 Difference]: With dead ends: 103 [2020-12-23 17:10:29,573 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 17:10:29,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 17:10:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 17:10:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-12-23 17:10:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 17:10:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-12-23 17:10:29,576 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 60 [2020-12-23 17:10:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:29,577 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-12-23 17:10:29,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 17:10:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-12-23 17:10:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 17:10:29,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:29,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:29,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 17:10:29,790 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:29,791 INFO L82 PathProgramCache]: Analyzing trace with hash -720543990, now seen corresponding path program 1 times [2020-12-23 17:10:29,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:29,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011801268] [2020-12-23 17:10:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:29,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011801268] [2020-12-23 17:10:29,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228872435] [2020-12-23 17:10:29,864 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 17:10:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:29,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 17:10:29,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:30,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:30,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 17:10:30,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622134602] [2020-12-23 17:10:30,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:10:30,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:10:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:10:30,024 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 7 states. [2020-12-23 17:10:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:30,071 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2020-12-23 17:10:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:10:30,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-23 17:10:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:30,074 INFO L225 Difference]: With dead ends: 137 [2020-12-23 17:10:30,074 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 17:10:30,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 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 17:10:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 17:10:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 104. [2020-12-23 17:10:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 17:10:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2020-12-23 17:10:30,079 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 69 [2020-12-23 17:10:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:30,079 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2020-12-23 17:10:30,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:10:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2020-12-23 17:10:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 17:10:30,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:30,080 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-23 17:10:30,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 17:10:30,295 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -809246151, now seen corresponding path program 1 times [2020-12-23 17:10:30,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:30,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395157157] [2020-12-23 17:10:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 33 proven. 92 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 17:10:30,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395157157] [2020-12-23 17:10:30,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48314429] [2020-12-23 17:10:30,564 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 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 17:10:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 17:10:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:30,834 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:30,835 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-12-23 17:10:30,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:30,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:30,840 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:30,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:30,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2020-12-23 17:10:30,856 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:30,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:30,869 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:30,870 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:30 [2020-12-23 17:10:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 59 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:31,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:31,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-12-23 17:10:31,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372371913] [2020-12-23 17:10:31,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 17:10:31,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 17:10:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-23 17:10:31,117 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand 17 states. [2020-12-23 17:10:31,727 WARN L197 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-23 17:10:33,462 WARN L197 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-23 17:10:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:33,597 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-12-23 17:10:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 17:10:33,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-12-23 17:10:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:33,599 INFO L225 Difference]: With dead ends: 138 [2020-12-23 17:10:33,599 INFO L226 Difference]: Without dead ends: 138 [2020-12-23 17:10:33,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-12-23 17:10:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-23 17:10:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2020-12-23 17:10:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 17:10:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-12-23 17:10:33,604 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 75 [2020-12-23 17:10:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:33,604 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-12-23 17:10:33,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 17:10:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-12-23 17:10:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 17:10:33,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:33,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-23 17:10:33,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 17:10:33,819 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash 683173057, now seen corresponding path program 1 times [2020-12-23 17:10:33,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:33,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137964304] [2020-12-23 17:10:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 88 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:33,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137964304] [2020-12-23 17:10:33,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199626878] [2020-12-23 17:10:33,958 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 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 17:10:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 17:10:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:34,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 17:10:34,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:34,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:34,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:34,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-23 17:10:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:34,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:34,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-23 17:10:34,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932742213] [2020-12-23 17:10:34,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:10:34,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:34,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:10:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:10:34,283 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 13 states. [2020-12-23 17:10:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:34,683 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-12-23 17:10:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:10:34,684 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-12-23 17:10:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:34,685 INFO L225 Difference]: With dead ends: 124 [2020-12-23 17:10:34,685 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 17:10:34,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:10:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 17:10:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-12-23 17:10:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 17:10:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-12-23 17:10:34,689 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 76 [2020-12-23 17:10:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:34,690 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-12-23 17:10:34,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:10:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-12-23 17:10:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 17:10:34,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:34,691 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-12-23 17:10:34,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 17:10:34,906 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:34,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1737117148, now seen corresponding path program 2 times [2020-12-23 17:10:34,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:34,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95884255] [2020-12-23 17:10:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 137 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95884255] [2020-12-23 17:10:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181956127] [2020-12-23 17:10:35,028 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 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 17:10:35,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:10:35,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:35,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 17:10:35,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 17:10:35,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:35,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2020-12-23 17:10:35,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083247828] [2020-12-23 17:10:35,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 17:10:35,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:35,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 17:10:35,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:10:35,288 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 15 states. [2020-12-23 17:10:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:35,867 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2020-12-23 17:10:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 17:10:35,868 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-12-23 17:10:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:35,870 INFO L225 Difference]: With dead ends: 177 [2020-12-23 17:10:35,870 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 17:10:35,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-12-23 17:10:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 17:10:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2020-12-23 17:10:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 17:10:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-12-23 17:10:35,875 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 80 [2020-12-23 17:10:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:35,875 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-12-23 17:10:35,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 17:10:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-12-23 17:10:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-23 17:10:35,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:35,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-23 17:10:36,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 17:10:36,091 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:36,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2063645405, now seen corresponding path program 4 times [2020-12-23 17:10:36,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:36,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784693282] [2020-12-23 17:10:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 108 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-23 17:10:36,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784693282] [2020-12-23 17:10:36,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371225985] [2020-12-23 17:10:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:36,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 17:10:36,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:36,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:10:36,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-23 17:10:36,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:36,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 17:10:36,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870144182] [2020-12-23 17:10:36,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:10:36,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:10:36,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:10:36,561 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 13 states. [2020-12-23 17:10:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:36,898 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-12-23 17:10:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:10:36,898 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-12-23 17:10:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:36,900 INFO L225 Difference]: With dead ends: 127 [2020-12-23 17:10:36,900 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 17:10:36,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:10:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 17:10:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-23 17:10:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 17:10:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2020-12-23 17:10:36,904 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 89 [2020-12-23 17:10:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:36,905 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2020-12-23 17:10:36,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:10:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2020-12-23 17:10:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 17:10:36,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:36,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-23 17:10:37,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:37,121 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:37,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1589193848, now seen corresponding path program 5 times [2020-12-23 17:10:37,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:37,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940868874] [2020-12-23 17:10:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 115 proven. 23 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-23 17:10:37,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940868874] [2020-12-23 17:10:37,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599588418] [2020-12-23 17:10:37,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:37,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 17:10:37,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:37,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:10:37,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 121 proven. 17 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-23 17:10:37,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:37,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 17:10:37,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747319464] [2020-12-23 17:10:37,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:10:37,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:10:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:10:37,580 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 13 states. [2020-12-23 17:10:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:37,933 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-12-23 17:10:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:10:37,934 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-12-23 17:10:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:37,935 INFO L225 Difference]: With dead ends: 132 [2020-12-23 17:10:37,936 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 17:10:37,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-12-23 17:10:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 17:10:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-12-23 17:10:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-23 17:10:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2020-12-23 17:10:37,940 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 94 [2020-12-23 17:10:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:37,941 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2020-12-23 17:10:37,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:10:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2020-12-23 17:10:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 17:10:37,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:37,942 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1] [2020-12-23 17:10:38,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 17:10:38,156 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1513852853, now seen corresponding path program 6 times [2020-12-23 17:10:38,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:38,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474267219] [2020-12-23 17:10:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-23 17:10:38,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474267219] [2020-12-23 17:10:38,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803758261] [2020-12-23 17:10:38,714 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 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 17:10:38,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 17:10:38,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:38,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 17:10:38,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:38,886 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:10:38,887 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:38,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:38,896 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:10:38,897 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:38,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:38,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:38,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-12-23 17:10:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:10:38,942 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-12-23 17:10:38,943 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:38,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:38,966 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:38,967 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-12-23 17:10:38,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:38,971 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:38,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:38,982 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:38,982 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:20 [2020-12-23 17:10:39,106 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:39,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 58 [2020-12-23 17:10:39,109 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:39,147 INFO L625 ElimStorePlain]: treesize reduction 24, result has 59.3 percent of original size [2020-12-23 17:10:39,149 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,151 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:39,151 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:37 [2020-12-23 17:10:39,153 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,273 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,439 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:39,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:10:41,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:41,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:10:41,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:10:41,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:10:41,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:10:41,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:10:41,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:41,962 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 6 treesize of output 5 [2020-12-23 17:10:41,962 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:41,969 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 6 treesize of output 5 [2020-12-23 17:10:41,970 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:42,049 INFO L625 ElimStorePlain]: treesize reduction 34, result has 62.6 percent of original size [2020-12-23 17:10:42,055 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-23 17:10:42,055 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:94, output treesize:57 [2020-12-23 17:10:42,164 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 11 treesize of output 7 [2020-12-23 17:10:42,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:42,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:42,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:42,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:22 [2020-12-23 17:10:44,285 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:44,286 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-23 17:10:44,291 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:44,335 INFO L625 ElimStorePlain]: treesize reduction 28, result has 54.1 percent of original size [2020-12-23 17:10:44,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:10:44,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:35 [2020-12-23 17:11:34,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:11:35,013 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 6 treesize of output 5 [2020-12-23 17:11:35,016 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:11:35,030 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:11:35,033 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:11:35,146 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-23 17:11:35,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:11:35,151 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-23 17:11:35,152 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:68 [2020-12-23 17:11:37,422 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-23 17:11:39,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:11:39,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:11:39,779 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:11:39,782 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 44 [2020-12-23 17:11:39,788 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:11:39,956 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-23 17:11:39,957 INFO L625 ElimStorePlain]: treesize reduction 16, result has 73.3 percent of original size [2020-12-23 17:11:40,041 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:11:40,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2020-12-23 17:11:40,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:11:40,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:11:40,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:11:40,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:11:40,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:11:40,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:11:40,063 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:11:40,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:11:40,131 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:11:40,131 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:39 [2020-12-23 17:11:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 61 proven. 103 refuted. 52 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-23 17:11:55,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:11:55,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2020-12-23 17:11:55,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959286990] [2020-12-23 17:11:55,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 17:11:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:11:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 17:11:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=879, Unknown=11, NotChecked=0, Total=992 [2020-12-23 17:11:55,775 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand 32 states. [2020-12-23 17:12:00,266 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-23 17:12:04,640 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-23 17:12:09,008 WARN L197 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-12-23 17:12:13,391 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-23 17:12:17,846 WARN L197 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-12-23 17:12:22,444 WARN L197 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-12-23 17:12:27,149 WARN L197 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-23 17:12:31,632 WARN L197 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-12-23 17:12:36,111 WARN L197 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-23 17:12:40,690 WARN L197 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-23 17:12:45,152 WARN L197 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-23 17:12:50,057 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-23 17:12:54,464 WARN L197 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-23 17:12:59,040 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-23 17:13:03,440 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-23 17:13:07,847 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-23 17:13:12,916 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-23 17:13:17,381 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-23 17:13:19,645 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 17:13:23,899 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-23 17:13:26,501 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 17:13:28,732 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-23 17:13:30,976 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 17:13:33,184 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-23 17:13:37,535 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-23 17:13:41,975 WARN L197 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-23 17:13:46,614 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-23 17:13:51,007 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-23 17:13:55,432 WARN L197 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-23 17:13:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:55,541 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2020-12-23 17:13:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 17:13:55,546 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-12-23 17:13:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:55,548 INFO L225 Difference]: With dead ends: 180 [2020-12-23 17:13:55,549 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 17:13:55,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 48 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 189.9s TimeCoverageRelationStatistics Valid=613, Invalid=3157, Unknown=12, NotChecked=0, Total=3782 [2020-12-23 17:13:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 17:13:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-12-23 17:13:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-23 17:13:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2020-12-23 17:13:55,554 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 98 [2020-12-23 17:13:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:55,554 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2020-12-23 17:13:55,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 17:13:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2020-12-23 17:13:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 17:13:55,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:55,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:55,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:55,769 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:13:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:55,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1637321043, now seen corresponding path program 2 times [2020-12-23 17:13:55,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:55,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380410169] [2020-12-23 17:13:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 17:13:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380410169] [2020-12-23 17:13:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873243142] [2020-12-23 17:13:55,989 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 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 17:13:56,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:13:56,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:13:56,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:13:56,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 17:13:56,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:56,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 17:13:56,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58349422] [2020-12-23 17:13:56,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:13:56,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:13:56,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:56,681 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 8 states. [2020-12-23 17:13:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:56,850 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2020-12-23 17:13:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:13:56,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-12-23 17:13:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:56,857 INFO L225 Difference]: With dead ends: 237 [2020-12-23 17:13:56,857 INFO L226 Difference]: Without dead ends: 237 [2020-12-23 17:13:56,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-23 17:13:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 173. [2020-12-23 17:13:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 17:13:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 184 transitions. [2020-12-23 17:13:56,862 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 184 transitions. Word has length 107 [2020-12-23 17:13:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:56,862 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 184 transitions. [2020-12-23 17:13:56,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:13:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2020-12-23 17:13:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 17:13:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:56,863 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-23 17:13:57,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 17:13:57,078 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:13:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:57,078 INFO L82 PathProgramCache]: Analyzing trace with hash 141914171, now seen corresponding path program 3 times [2020-12-23 17:13:57,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:57,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053380400] [2020-12-23 17:13:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 152 proven. 201 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-23 17:13:57,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053380400] [2020-12-23 17:13:57,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868310688] [2020-12-23 17:13:57,706 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 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 17:13:57,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 17:13:57,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:13:57,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 17:13:57,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:58,608 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:58,609 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 44 [2020-12-23 17:13:58,611 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:58,614 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:58,783 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-23 17:13:58,785 INFO L625 ElimStorePlain]: treesize reduction 16, result has 72.9 percent of original size [2020-12-23 17:13:58,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:58,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:58,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:58,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:58,796 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:58,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:52 [2020-12-23 17:13:58,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:58,799 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:58,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:58,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:58,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: should have been removed by DER [2020-12-23 17:13:58,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:13:58,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 17:13:58,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350222905] [2020-12-23 17:13:58,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:13:58,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:13:58,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:13:58,936 INFO L87 Difference]: Start difference. First operand 173 states and 184 transitions. Second operand 12 states. [2020-12-23 17:14:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:01,231 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2020-12-23 17:14:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 17:14:01,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2020-12-23 17:14:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:01,238 INFO L225 Difference]: With dead ends: 188 [2020-12-23 17:14:01,238 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 17:14:01,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:14:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 17:14:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 174. [2020-12-23 17:14:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-23 17:14:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2020-12-23 17:14:01,243 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 118 [2020-12-23 17:14:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:01,243 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2020-12-23 17:14:01,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:14:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2020-12-23 17:14:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-23 17:14:01,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:01,245 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-23 17:14:01,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 17:14:01,460 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:14:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 104371967, now seen corresponding path program 2 times [2020-12-23 17:14:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:01,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121485696] [2020-12-23 17:14:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 159 proven. 194 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 17:14:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121485696] [2020-12-23 17:14:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278098946] [2020-12-23 17:14:01,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:14:01,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 17:14:01,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:14:01,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 17:14:01,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:02,555 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 17:14:02,558 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:02,586 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:02,589 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:02,589 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:25 [2020-12-23 17:14:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-12-23 17:14:02,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:14:02,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-12-23 17:14:02,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703992360] [2020-12-23 17:14:02,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 17:14:02,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:14:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 17:14:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:14:02,992 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand 15 states. [2020-12-23 17:14:05,286 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-23 17:14:05,503 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 17:14:05,718 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 17:14:05,933 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-23 17:14:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:06,782 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2020-12-23 17:14:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 17:14:06,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 119 [2020-12-23 17:14:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:06,790 INFO L225 Difference]: With dead ends: 176 [2020-12-23 17:14:06,790 INFO L226 Difference]: Without dead ends: 176 [2020-12-23 17:14:06,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 17:14:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-23 17:14:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-12-23 17:14:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 17:14:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 184 transitions. [2020-12-23 17:14:06,797 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 184 transitions. Word has length 119 [2020-12-23 17:14:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:06,797 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 184 transitions. [2020-12-23 17:14:06,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 17:14:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2020-12-23 17:14:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 17:14:06,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:06,798 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1] [2020-12-23 17:14:06,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 17:14:07,000 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:14:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:07,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2046203234, now seen corresponding path program 4 times [2020-12-23 17:14:07,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:07,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099812372] [2020-12-23 17:14:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 28 proven. 367 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 17:14:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099812372] [2020-12-23 17:14:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389388980] [2020-12-23 17:14:07,384 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 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 17:14:07,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 17:14:07,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:14:07,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 17:14:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 44 proven. 351 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 17:14:09,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:14:09,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2020-12-23 17:14:09,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192983938] [2020-12-23 17:14:09,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 17:14:09,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:14:09,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 17:14:09,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:14:09,014 INFO L87 Difference]: Start difference. First operand 173 states and 184 transitions. Second operand 18 states. [2020-12-23 17:14:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:11,611 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions. [2020-12-23 17:14:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:14:11,617 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-12-23 17:14:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:11,621 INFO L225 Difference]: With dead ends: 253 [2020-12-23 17:14:11,621 INFO L226 Difference]: Without dead ends: 253 [2020-12-23 17:14:11,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 17:14:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-12-23 17:14:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 194. [2020-12-23 17:14:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-23 17:14:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2020-12-23 17:14:11,627 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 123 [2020-12-23 17:14:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:11,627 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2020-12-23 17:14:11,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 17:14:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2020-12-23 17:14:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-23 17:14:11,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:11,629 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1] [2020-12-23 17:14:11,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 17:14:11,843 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:14:11,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash 188104713, now seen corresponding path program 7 times [2020-12-23 17:14:11,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:11,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258432712] [2020-12-23 17:14:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 350 proven. 134 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-23 17:14:12,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258432712] [2020-12-23 17:14:12,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734813555] [2020-12-23 17:14:12,436 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 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 17:14:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:12,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 17:14:12,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 225 proven. 259 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-23 17:14:13,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:14:13,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2020-12-23 17:14:13,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182746484] [2020-12-23 17:14:13,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 17:14:13,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:14:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 17:14:13,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:14:13,910 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand 18 states. [2020-12-23 17:14:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:15,455 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2020-12-23 17:14:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 17:14:15,460 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-12-23 17:14:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:15,461 INFO L225 Difference]: With dead ends: 208 [2020-12-23 17:14:15,461 INFO L226 Difference]: Without dead ends: 208 [2020-12-23 17:14:15,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-12-23 17:14:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-23 17:14:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2020-12-23 17:14:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 17:14:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 214 transitions. [2020-12-23 17:14:15,467 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 214 transitions. Word has length 141 [2020-12-23 17:14:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:15,467 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 214 transitions. [2020-12-23 17:14:15,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 17:14:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 214 transitions. [2020-12-23 17:14:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 17:14:15,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:15,469 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1] [2020-12-23 17:14:15,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 17:14:15,681 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:14:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:15,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2033693772, now seen corresponding path program 8 times [2020-12-23 17:14:15,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:15,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445619796] [2020-12-23 17:14:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-23 17:14:17,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445619796] [2020-12-23 17:14:17,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950195689] [2020-12-23 17:14:17,902 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 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 17:14:18,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:14:18,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:14:18,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 17:14:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:18,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:14:18,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:18,112 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:14:18,193 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:18,194 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 32 [2020-12-23 17:14:18,198 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,304 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-12-23 17:14:18,308 INFO L625 ElimStorePlain]: treesize reduction 12, result has 65.7 percent of original size [2020-12-23 17:14:18,310 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:25 [2020-12-23 17:14:18,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:14:18,508 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:14:18,514 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,534 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:14:18,537 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:18,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:18,635 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 2 xjuncts. [2020-12-23 17:14:18,636 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:50, output treesize:48 [2020-12-23 17:14:19,113 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:19,116 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:19,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:14:19,306 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-23 17:14:19,308 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:19,308 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 68 [2020-12-23 17:14:19,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:19,316 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:19,395 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:19,395 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 36 [2020-12-23 17:14:19,401 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:19,847 WARN L197 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-23 17:14:19,849 INFO L625 ElimStorePlain]: treesize reduction 54, result has 58.5 percent of original size [2020-12-23 17:14:19,934 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:19,934 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:14:19,939 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:20,035 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:20,035 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-23 17:14:20,039 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:20,424 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-23 17:14:20,425 INFO L625 ElimStorePlain]: treesize reduction 24, result has 76.5 percent of original size [2020-12-23 17:14:20,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:20,430 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 17:14:20,430 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:82 [2020-12-23 17:14:20,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:20,877 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-12-23 17:14:20,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:20,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:14:20,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:14:21,135 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:21,135 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-23 17:14:21,140 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:21,170 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-12-23 17:14:21,175 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:21,198 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-12-23 17:14:21,203 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:21,491 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-23 17:14:21,492 INFO L625 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-12-23 17:14:21,495 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 17:14:21,496 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:106, output treesize:46 [2020-12-23 17:14:21,743 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:21,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-12-23 17:14:21,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:14:21,751 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:21,791 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:21,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:14:21,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2020-12-23 17:14:22,231 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-23 17:14:22,232 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:22,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 60 [2020-12-23 17:14:22,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:22,419 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-23 17:14:22,421 INFO L625 ElimStorePlain]: treesize reduction 28, result has 56.3 percent of original size [2020-12-23 17:14:22,424 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:14:22,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:38