/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/loop-acceleration/array3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:44:32,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:44:32,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:44:32,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:44:32,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:44:32,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:44:32,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:44:32,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:44:32,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:44:32,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:44:32,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:44:32,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:44:32,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:44:32,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:44:32,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:44:32,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:44:32,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:44:32,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:44:32,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:44:32,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:44:32,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:44:32,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:44:32,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:44:32,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:44:32,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:44:32,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:44:32,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:44:32,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:44:32,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:44:32,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:44:32,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:44:32,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:44:32,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:44:32,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:44:32,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:44:32,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:44:32,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:44:32,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:44:32,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:44:32,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:44:32,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:44:32,446 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:44:32,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:44:32,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:44:32,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:44:32,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:44:32,447 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:44:32,448 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:44:32,448 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:44:32,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:44:32,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:44:32,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:44:32,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:44:32,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:44:32,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:44:32,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:44:32,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:44:32,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:44:32,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:44:32,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:44:32,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:44:32,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:44:32,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:44:33,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:44:33,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:44:33,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:44:33,009 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:44:33,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array3.i [2021-01-07 05:44:33,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19f6b8660/b86cc9a3b778478fad5a1bc5e404091f/FLAGc1cb5b986 [2021-01-07 05:44:33,875 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:44:33,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i [2021-01-07 05:44:33,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19f6b8660/b86cc9a3b778478fad5a1bc5e404091f/FLAGc1cb5b986 [2021-01-07 05:44:34,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19f6b8660/b86cc9a3b778478fad5a1bc5e404091f [2021-01-07 05:44:34,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:44:34,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:44:34,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:44:34,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:44:34,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:44:34,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296b5a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34, skipping insertion in model container [2021-01-07 05:44:34,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:44:34,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:44:34,434 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i[846,859] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~A~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:44:34,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:44:34,462 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:44:34,475 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i[846,859] left hand side expression in assignment: lhs: VariableLHS[~i~0,] 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~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:44:34,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:44:34,499 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:44:34,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34 WrapperNode [2021-01-07 05:44:34,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:44:34,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:44:34,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:44:34,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:44:34,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:44:34,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:44:34,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:44:34,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:44:34,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... [2021-01-07 05:44:34,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:44:34,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:44:34,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:44:34,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:44:34,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:44:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:44:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:44:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:44:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:44:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:44:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:44:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:44:35,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:44:35,036 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-07 05:44:35,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:44:35 BoogieIcfgContainer [2021-01-07 05:44:35,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:44:35,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:44:35,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:44:35,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:44:35,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:44:34" (1/3) ... [2021-01-07 05:44:35,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734c0c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:44:35, skipping insertion in model container [2021-01-07 05:44:35,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:44:34" (2/3) ... [2021-01-07 05:44:35,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734c0c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:44:35, skipping insertion in model container [2021-01-07 05:44:35,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:44:35" (3/3) ... [2021-01-07 05:44:35,050 INFO L111 eAbstractionObserver]: Analyzing ICFG array3.i [2021-01-07 05:44:35,058 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:44:35,114 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-07 05:44:35,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-07 05:44:35,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:44:35,218 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:44:35,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:44:35,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:44:35,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:44:35,219 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:44:35,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:44:35,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:44:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-01-07 05:44:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:44:35,253 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:35,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:44:35,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:44:35,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:35,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92930613] [2021-01-07 05:44:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:35,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92930613] [2021-01-07 05:44:35,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:44:35,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:44:35,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163814853] [2021-01-07 05:44:35,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:44:35,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:44:35,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:44:35,502 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2021-01-07 05:44:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:35,556 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-01-07 05:44:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:44:35,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:44:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:35,574 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:44:35,575 INFO L226 Difference]: Without dead ends: 20 [2021-01-07 05:44:35,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:44:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-07 05:44:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-07 05:44:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-07 05:44:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-07 05:44:35,640 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-01-07 05:44:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:35,641 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-07 05:44:35,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:44:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-07 05:44:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:44:35,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:35,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:44:35,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:44:35,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:35,651 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:44:35,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:35,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858134211] [2021-01-07 05:44:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:35,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858134211] [2021-01-07 05:44:35,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:44:35,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:44:35,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467165564] [2021-01-07 05:44:35,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:44:35,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:35,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:44:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:44:35,788 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2021-01-07 05:44:35,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:35,849 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-01-07 05:44:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:44:35,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:44:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:35,851 INFO L225 Difference]: With dead ends: 24 [2021-01-07 05:44:35,851 INFO L226 Difference]: Without dead ends: 24 [2021-01-07 05:44:35,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:44:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-07 05:44:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-01-07 05:44:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-07 05:44:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-01-07 05:44:35,857 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2021-01-07 05:44:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:35,858 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-01-07 05:44:35,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:44:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-01-07 05:44:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:44:35,859 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:35,859 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:35,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:44:35,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:44:35,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:35,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909372119] [2021-01-07 05:44:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909372119] [2021-01-07 05:44:35,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266005356] [2021-01-07 05:44:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:36,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:44:36,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:36,133 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 [2021-01-07 05:44:36,134 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:36,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:36,143 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:36,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:44:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:36,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:36,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-01-07 05:44:36,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829720695] [2021-01-07 05:44:36,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:44:36,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:36,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:44:36,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:44:36,179 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2021-01-07 05:44:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:36,297 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-01-07 05:44:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:44:36,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:44:36,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:36,299 INFO L225 Difference]: With dead ends: 47 [2021-01-07 05:44:36,299 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:44:36,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:44:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:44:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-01-07 05:44:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-07 05:44:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-01-07 05:44:36,306 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-01-07 05:44:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:36,307 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-01-07 05:44:36,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:44:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-01-07 05:44:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:44:36,308 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:36,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:36,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:44:36,523 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash -988350449, now seen corresponding path program 1 times [2021-01-07 05:44:36,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:36,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227221514] [2021-01-07 05:44:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:36,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227221514] [2021-01-07 05:44:36,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:44:36,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:44:36,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517214459] [2021-01-07 05:44:36,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:44:36,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:36,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:44:36,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:44:36,652 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 4 states. [2021-01-07 05:44:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:36,693 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-01-07 05:44:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:44:36,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-01-07 05:44:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:36,695 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:44:36,696 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:44:36,696 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 [2021-01-07 05:44:36,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:44:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-01-07 05:44:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:44:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-01-07 05:44:36,704 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 21 [2021-01-07 05:44:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:36,705 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-01-07 05:44:36,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:44:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-01-07 05:44:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:44:36,709 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:36,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:36,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:44:36,710 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:36,711 INFO L82 PathProgramCache]: Analyzing trace with hash -574087801, now seen corresponding path program 1 times [2021-01-07 05:44:36,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:36,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286387995] [2021-01-07 05:44:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:36,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286387995] [2021-01-07 05:44:36,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846830673] [2021-01-07 05:44:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:36,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:44:36,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:36,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:36,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:44:36,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327597058] [2021-01-07 05:44:36,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:44:36,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:44:36,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:44:36,971 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2021-01-07 05:44:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:37,042 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-01-07 05:44:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:44:37,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-07 05:44:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:37,044 INFO L225 Difference]: With dead ends: 78 [2021-01-07 05:44:37,044 INFO L226 Difference]: Without dead ends: 78 [2021-01-07 05:44:37,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:44:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-07 05:44:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 43. [2021-01-07 05:44:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-07 05:44:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-01-07 05:44:37,055 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2021-01-07 05:44:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:37,055 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-01-07 05:44:37,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:44:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-01-07 05:44:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:44:37,057 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:37,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:37,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:37,266 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash -383321270, now seen corresponding path program 2 times [2021-01-07 05:44:37,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:37,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706329816] [2021-01-07 05:44:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:44:37,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706329816] [2021-01-07 05:44:37,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780706109] [2021-01-07 05:44:37,398 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:37,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:44:37,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:37,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:44:37,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:37,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:44:37,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:44:37,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433443720] [2021-01-07 05:44:37,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:44:37,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:37,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:44:37,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:44:37,522 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2021-01-07 05:44:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:37,541 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-01-07 05:44:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:44:37,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-01-07 05:44:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:37,543 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:44:37,543 INFO L226 Difference]: Without dead ends: 38 [2021-01-07 05:44:37,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:44:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-07 05:44:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-01-07 05:44:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-07 05:44:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-01-07 05:44:37,557 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 26 [2021-01-07 05:44:37,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:37,558 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-01-07 05:44:37,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:44:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-01-07 05:44:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:44:37,559 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:37,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:37,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:37,761 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1416380605, now seen corresponding path program 1 times [2021-01-07 05:44:37,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:37,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667347897] [2021-01-07 05:44:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:37,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667347897] [2021-01-07 05:44:37,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854286395] [2021-01-07 05:44:37,827 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:37,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:44:37,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:44:37,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:37,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2021-01-07 05:44:37,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054684439] [2021-01-07 05:44:37,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:44:37,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:44:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:44:37,953 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 9 states. [2021-01-07 05:44:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:38,088 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-01-07 05:44:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:44:38,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-07 05:44:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:38,092 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:44:38,093 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:44:38,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:44:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:44:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-01-07 05:44:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:44:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-01-07 05:44:38,111 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 29 [2021-01-07 05:44:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:38,111 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-01-07 05:44:38,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:44:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-01-07 05:44:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:44:38,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:38,113 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-01-07 05:44:38,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:38,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1132990271, now seen corresponding path program 1 times [2021-01-07 05:44:38,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:38,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103913413] [2021-01-07 05:44:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:38,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103913413] [2021-01-07 05:44:38,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570926589] [2021-01-07 05:44:38,423 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 [2021-01-07 05:44:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:38,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:44:38,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:38,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:38,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:44:38,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976803671] [2021-01-07 05:44:38,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:44:38,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:38,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:44:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:44:38,615 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 9 states. [2021-01-07 05:44:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:38,728 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-01-07 05:44:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:44:38,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-07 05:44:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:38,730 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:44:38,730 INFO L226 Difference]: Without dead ends: 71 [2021-01-07 05:44:38,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:44:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-07 05:44:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2021-01-07 05:44:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:44:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-01-07 05:44:38,735 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 37 [2021-01-07 05:44:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:38,736 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-01-07 05:44:38,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:44:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-01-07 05:44:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-07 05:44:38,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:38,737 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-01-07 05:44:38,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:38,951 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:38,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2013301602, now seen corresponding path program 2 times [2021-01-07 05:44:38,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:38,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247431691] [2021-01-07 05:44:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:39,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247431691] [2021-01-07 05:44:39,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140099247] [2021-01-07 05:44:39,098 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:39,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:44:39,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:44:39,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:39,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:39,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-07 05:44:39,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403007314] [2021-01-07 05:44:39,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:44:39,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:39,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:44:39,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:44:39,222 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2021-01-07 05:44:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:39,331 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-01-07 05:44:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:44:39,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2021-01-07 05:44:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:39,332 INFO L225 Difference]: With dead ends: 84 [2021-01-07 05:44:39,332 INFO L226 Difference]: Without dead ends: 84 [2021-01-07 05:44:39,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:44:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-07 05:44:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 59. [2021-01-07 05:44:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:44:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-01-07 05:44:39,338 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 41 [2021-01-07 05:44:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:39,338 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-01-07 05:44:39,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:44:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-01-07 05:44:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:44:39,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:39,340 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-01-07 05:44:39,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:39,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:39,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:39,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2050474491, now seen corresponding path program 3 times [2021-01-07 05:44:39,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:39,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130390628] [2021-01-07 05:44:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:44:39,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130390628] [2021-01-07 05:44:39,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959244183] [2021-01-07 05:44:39,701 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:39,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:44:39,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:39,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:44:39,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:39,775 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 [2021-01-07 05:44:39,776 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:39,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:39,782 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:39,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:44:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:39,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:39,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2021-01-07 05:44:39,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759932172] [2021-01-07 05:44:39,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:44:39,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:39,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:44:40,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:44:40,001 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 17 states. [2021-01-07 05:44:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:40,359 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-01-07 05:44:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:44:40,360 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2021-01-07 05:44:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:40,362 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:44:40,363 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:44:40,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:44:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:44:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 67. [2021-01-07 05:44:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-07 05:44:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2021-01-07 05:44:40,370 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 45 [2021-01-07 05:44:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:40,370 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2021-01-07 05:44:40,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:44:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2021-01-07 05:44:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-07 05:44:40,372 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:40,372 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-01-07 05:44:40,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:44:40,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1299221260, now seen corresponding path program 4 times [2021-01-07 05:44:40,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:40,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58128838] [2021-01-07 05:44:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:40,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58128838] [2021-01-07 05:44:40,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412212855] [2021-01-07 05:44:40,718 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:40,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:44:40,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:44:40,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:40,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:40,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-07 05:44:40,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091904884] [2021-01-07 05:44:40,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:44:40,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:44:40,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:44:40,979 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 13 states. [2021-01-07 05:44:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:41,127 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-01-07 05:44:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:44:41,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2021-01-07 05:44:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:41,130 INFO L225 Difference]: With dead ends: 122 [2021-01-07 05:44:41,130 INFO L226 Difference]: Without dead ends: 122 [2021-01-07 05:44:41,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:44:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-07 05:44:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 71. [2021-01-07 05:44:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-07 05:44:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-01-07 05:44:41,147 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 57 [2021-01-07 05:44:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:41,148 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-01-07 05:44:41,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:44:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-01-07 05:44:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-07 05:44:41,152 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:41,152 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-01-07 05:44:41,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-07 05:44:41,370 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash 891584105, now seen corresponding path program 5 times [2021-01-07 05:44:41,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:41,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574505637] [2021-01-07 05:44:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:41,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574505637] [2021-01-07 05:44:41,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177772199] [2021-01-07 05:44:41,545 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:41,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-07 05:44:41,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:44:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:41,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:41,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-07 05:44:41,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067805981] [2021-01-07 05:44:41,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:44:41,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:44:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:44:41,803 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 14 states. [2021-01-07 05:44:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:41,964 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2021-01-07 05:44:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:44:41,964 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2021-01-07 05:44:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:41,965 INFO L225 Difference]: With dead ends: 135 [2021-01-07 05:44:41,966 INFO L226 Difference]: Without dead ends: 135 [2021-01-07 05:44:41,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:44:41,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-07 05:44:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 75. [2021-01-07 05:44:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:44:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-01-07 05:44:41,971 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 61 [2021-01-07 05:44:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:41,971 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-01-07 05:44:41,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:44:41,972 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-01-07 05:44:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-07 05:44:41,973 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:41,973 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-01-07 05:44:42,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:42,188 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1891990342, now seen corresponding path program 6 times [2021-01-07 05:44:42,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:42,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119367367] [2021-01-07 05:44:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:44:42,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119367367] [2021-01-07 05:44:42,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521902228] [2021-01-07 05:44:42,398 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:42,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:44:42,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:42,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:44:42,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:42,508 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 [2021-01-07 05:44:42,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:42,513 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:42,514 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:42,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:44:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:44:42,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:42,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 20 [2021-01-07 05:44:42,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880451264] [2021-01-07 05:44:42,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:44:42,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:42,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:44:42,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:44:42,730 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 20 states. [2021-01-07 05:44:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:43,225 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2021-01-07 05:44:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:44:43,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2021-01-07 05:44:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:43,226 INFO L225 Difference]: With dead ends: 141 [2021-01-07 05:44:43,227 INFO L226 Difference]: Without dead ends: 141 [2021-01-07 05:44:43,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=470, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:44:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-01-07 05:44:43,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 79. [2021-01-07 05:44:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-07 05:44:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-01-07 05:44:43,232 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 65 [2021-01-07 05:44:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:43,232 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-01-07 05:44:43,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:44:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-01-07 05:44:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-07 05:44:43,234 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:43,234 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-01-07 05:44:43,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:43,448 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:43,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1196797050, now seen corresponding path program 7 times [2021-01-07 05:44:43,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:43,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852733062] [2021-01-07 05:44:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:44:43,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852733062] [2021-01-07 05:44:43,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7248941] [2021-01-07 05:44:43,632 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:43,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:44:43,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:44:43,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:43,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-07 05:44:43,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115601272] [2021-01-07 05:44:43,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:44:43,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:44:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:44:43,832 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 16 states. [2021-01-07 05:44:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:44,023 INFO L93 Difference]: Finished difference Result 160 states and 161 transitions. [2021-01-07 05:44:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:44:44,024 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2021-01-07 05:44:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:44,027 INFO L225 Difference]: With dead ends: 160 [2021-01-07 05:44:44,027 INFO L226 Difference]: Without dead ends: 160 [2021-01-07 05:44:44,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:44:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-07 05:44:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 83. [2021-01-07 05:44:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-07 05:44:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-01-07 05:44:44,032 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 73 [2021-01-07 05:44:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:44,032 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-01-07 05:44:44,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:44:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-01-07 05:44:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-07 05:44:44,035 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:44,035 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-01-07 05:44:44,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:44:44,236 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash -193378857, now seen corresponding path program 8 times [2021-01-07 05:44:44,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:44,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822140425] [2021-01-07 05:44:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:44:44,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822140425] [2021-01-07 05:44:44,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347455299] [2021-01-07 05:44:44,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:44,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:44:44,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:44,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:44:44,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:44:44,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:44,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-07 05:44:44,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912758610] [2021-01-07 05:44:44,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:44:44,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:44,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:44:44,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:44:44,673 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 17 states. [2021-01-07 05:44:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:44,872 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2021-01-07 05:44:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:44:44,872 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2021-01-07 05:44:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:44,874 INFO L225 Difference]: With dead ends: 173 [2021-01-07 05:44:44,874 INFO L226 Difference]: Without dead ends: 173 [2021-01-07 05:44:44,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:44:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-07 05:44:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 87. [2021-01-07 05:44:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:44:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-01-07 05:44:44,879 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2021-01-07 05:44:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:44,880 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-01-07 05:44:44,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:44:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-01-07 05:44:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-07 05:44:44,881 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:44,881 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-01-07 05:44:45,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:44:45,095 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash -918099788, now seen corresponding path program 9 times [2021-01-07 05:44:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:45,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305444190] [2021-01-07 05:44:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:44:45,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305444190] [2021-01-07 05:44:45,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579912725] [2021-01-07 05:44:45,355 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:45,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-07 05:44:45,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:45,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:44:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:45,443 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 [2021-01-07 05:44:45,444 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:45,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:45,448 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:45,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:44:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 53 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:44:45,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:45,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 26 [2021-01-07 05:44:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103255007] [2021-01-07 05:44:45,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:44:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:44:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=400, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:44:45,714 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 26 states. [2021-01-07 05:44:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:46,398 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2021-01-07 05:44:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:44:46,399 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 81 [2021-01-07 05:44:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:46,401 INFO L225 Difference]: With dead ends: 179 [2021-01-07 05:44:46,401 INFO L226 Difference]: Without dead ends: 179 [2021-01-07 05:44:46,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=460, Invalid=800, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:44:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-07 05:44:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 98. [2021-01-07 05:44:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-07 05:44:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-01-07 05:44:46,405 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 81 [2021-01-07 05:44:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:46,406 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-01-07 05:44:46,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:44:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-01-07 05:44:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-01-07 05:44:46,407 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:46,407 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:44:46,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:44:46,619 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:46,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1695794939, now seen corresponding path program 2 times [2021-01-07 05:44:46,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:46,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82093126] [2021-01-07 05:44:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2021-01-07 05:44:46,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82093126] [2021-01-07 05:44:46,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:44:46,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:44:46,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656953630] [2021-01-07 05:44:46,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:44:46,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:44:46,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:44:46,729 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 5 states. [2021-01-07 05:44:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:46,761 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-01-07 05:44:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:44:46,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2021-01-07 05:44:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:46,763 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:44:46,763 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:44:46,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:44:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:44:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-01-07 05:44:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-07 05:44:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-01-07 05:44:46,767 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 93 [2021-01-07 05:44:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:46,770 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-01-07 05:44:46,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:44:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-01-07 05:44:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-01-07 05:44:46,773 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:46,773 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2021-01-07 05:44:46,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:44:46,774 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:46,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1695848517, now seen corresponding path program 10 times [2021-01-07 05:44:46,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:46,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197208704] [2021-01-07 05:44:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:47,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197208704] [2021-01-07 05:44:47,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97120424] [2021-01-07 05:44:47,081 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:47,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:44:47,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:47,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:44:47,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:47,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:47,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-07 05:44:47,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442391657] [2021-01-07 05:44:47,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:44:47,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:47,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:44:47,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:44:47,605 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 20 states. [2021-01-07 05:44:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:47,817 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2021-01-07 05:44:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:44:47,818 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2021-01-07 05:44:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:47,819 INFO L225 Difference]: With dead ends: 159 [2021-01-07 05:44:47,819 INFO L226 Difference]: Without dead ends: 159 [2021-01-07 05:44:47,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:44:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-07 05:44:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2021-01-07 05:44:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-07 05:44:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-01-07 05:44:47,823 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 93 [2021-01-07 05:44:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:47,823 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-01-07 05:44:47,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:44:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-01-07 05:44:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-07 05:44:47,824 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:47,824 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2021-01-07 05:44:48,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:48,038 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash 553836834, now seen corresponding path program 11 times [2021-01-07 05:44:48,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:48,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424367192] [2021-01-07 05:44:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:48,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424367192] [2021-01-07 05:44:48,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316077569] [2021-01-07 05:44:48,314 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:48,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-07 05:44:48,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:48,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:44:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:48,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:48,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-07 05:44:48,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212917078] [2021-01-07 05:44:48,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:44:48,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:44:48,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:44:48,860 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2021-01-07 05:44:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:49,127 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2021-01-07 05:44:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:44:49,127 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 97 [2021-01-07 05:44:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:49,129 INFO L225 Difference]: With dead ends: 168 [2021-01-07 05:44:49,129 INFO L226 Difference]: Without dead ends: 168 [2021-01-07 05:44:49,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:44:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-01-07 05:44:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 102. [2021-01-07 05:44:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-01-07 05:44:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2021-01-07 05:44:49,133 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 97 [2021-01-07 05:44:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:49,134 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2021-01-07 05:44:49,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:44:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2021-01-07 05:44:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-07 05:44:49,135 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:49,135 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2021-01-07 05:44:49,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:49,350 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash 951546751, now seen corresponding path program 12 times [2021-01-07 05:44:49,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:49,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946368868] [2021-01-07 05:44:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:44:49,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946368868] [2021-01-07 05:44:49,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54887541] [2021-01-07 05:44:49,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:49,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-07 05:44:49,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:49,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:44:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:49,958 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 [2021-01-07 05:44:49,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:49,965 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:49,965 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:49,966 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:44:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 69 proven. 66 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2021-01-07 05:44:50,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:50,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 31 [2021-01-07 05:44:50,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030620114] [2021-01-07 05:44:50,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:44:50,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:50,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:44:50,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=564, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:44:50,311 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 31 states. [2021-01-07 05:44:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:51,186 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-01-07 05:44:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:44:51,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 101 [2021-01-07 05:44:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:51,188 INFO L225 Difference]: With dead ends: 167 [2021-01-07 05:44:51,188 INFO L226 Difference]: Without dead ends: 167 [2021-01-07 05:44:51,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=691, Invalid=1201, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:44:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-01-07 05:44:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 114. [2021-01-07 05:44:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-07 05:44:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2021-01-07 05:44:51,193 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 101 [2021-01-07 05:44:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:51,194 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2021-01-07 05:44:51,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:44:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2021-01-07 05:44:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-01-07 05:44:51,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:51,195 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-01-07 05:44:51,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:51,410 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash -241703792, now seen corresponding path program 13 times [2021-01-07 05:44:51,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:51,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569937075] [2021-01-07 05:44:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:44:51,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569937075] [2021-01-07 05:44:51,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404840145] [2021-01-07 05:44:51,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:51,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-07 05:44:51,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:44:52,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:52,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-07 05:44:52,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878427294] [2021-01-07 05:44:52,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:44:52,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:44:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:44:52,024 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 24 states. [2021-01-07 05:44:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:52,327 INFO L93 Difference]: Finished difference Result 194 states and 195 transitions. [2021-01-07 05:44:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:44:52,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 113 [2021-01-07 05:44:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:52,329 INFO L225 Difference]: With dead ends: 194 [2021-01-07 05:44:52,329 INFO L226 Difference]: Without dead ends: 194 [2021-01-07 05:44:52,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:44:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-01-07 05:44:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 118. [2021-01-07 05:44:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-01-07 05:44:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2021-01-07 05:44:52,335 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 113 [2021-01-07 05:44:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:52,335 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2021-01-07 05:44:52,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:44:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2021-01-07 05:44:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-07 05:44:52,336 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:52,336 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-01-07 05:44:52,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-07 05:44:52,550 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1335762157, now seen corresponding path program 14 times [2021-01-07 05:44:52,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:52,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044067436] [2021-01-07 05:44:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:44:52,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044067436] [2021-01-07 05:44:52,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135331551] [2021-01-07 05:44:52,948 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:53,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:44:53,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:53,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:44:53,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:44:53,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:53,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-07 05:44:53,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590834719] [2021-01-07 05:44:53,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:44:53,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:53,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:44:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:44:53,193 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2021-01-07 05:44:53,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:53,469 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2021-01-07 05:44:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:44:53,469 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 117 [2021-01-07 05:44:53,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:53,471 INFO L225 Difference]: With dead ends: 203 [2021-01-07 05:44:53,471 INFO L226 Difference]: Without dead ends: 203 [2021-01-07 05:44:53,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:44:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-01-07 05:44:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 122. [2021-01-07 05:44:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-07 05:44:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2021-01-07 05:44:53,475 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2021-01-07 05:44:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:53,476 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2021-01-07 05:44:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:44:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2021-01-07 05:44:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-07 05:44:53,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:53,477 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-01-07 05:44:53,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:44:53,693 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1424416458, now seen corresponding path program 15 times [2021-01-07 05:44:53,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:53,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595851804] [2021-01-07 05:44:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:44:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595851804] [2021-01-07 05:44:54,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980371474] [2021-01-07 05:44:54,150 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:54,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-07 05:44:54,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:54,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:44:54,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:54,264 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 [2021-01-07 05:44:54,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:44:54,268 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:44:54,269 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:44:54,269 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:44:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 85 proven. 91 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-01-07 05:44:54,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:54,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12] total 36 [2021-01-07 05:44:54,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147246477] [2021-01-07 05:44:54,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:44:54,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:44:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=755, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:44:54,661 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 36 states. [2021-01-07 05:44:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:55,931 INFO L93 Difference]: Finished difference Result 199 states and 215 transitions. [2021-01-07 05:44:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:44:55,932 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 121 [2021-01-07 05:44:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:55,936 INFO L225 Difference]: With dead ends: 199 [2021-01-07 05:44:55,936 INFO L226 Difference]: Without dead ends: 199 [2021-01-07 05:44:55,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=969, Invalid=1683, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:44:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-01-07 05:44:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 134. [2021-01-07 05:44:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-07 05:44:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2021-01-07 05:44:55,942 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 121 [2021-01-07 05:44:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:55,943 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2021-01-07 05:44:55,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:44:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2021-01-07 05:44:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-01-07 05:44:55,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:55,944 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2021-01-07 05:44:56,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:44:56,159 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1850715813, now seen corresponding path program 16 times [2021-01-07 05:44:56,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:56,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268146042] [2021-01-07 05:44:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:44:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268146042] [2021-01-07 05:44:56,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766568155] [2021-01-07 05:44:56,699 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:57,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:44:57,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-07 05:44:57,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:44:57,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:57,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-01-07 05:44:57,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745355034] [2021-01-07 05:44:57,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:44:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:44:57,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:44:57,448 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 28 states. [2021-01-07 05:44:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:57,787 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2021-01-07 05:44:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:44:57,788 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 133 [2021-01-07 05:44:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:57,790 INFO L225 Difference]: With dead ends: 229 [2021-01-07 05:44:57,790 INFO L226 Difference]: Without dead ends: 229 [2021-01-07 05:44:57,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:44:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-01-07 05:44:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 138. [2021-01-07 05:44:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-01-07 05:44:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2021-01-07 05:44:57,795 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 133 [2021-01-07 05:44:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:57,795 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2021-01-07 05:44:57,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:44:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2021-01-07 05:44:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-01-07 05:44:57,796 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:57,796 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2021-01-07 05:44:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:44:58,011 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:58,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1174685384, now seen corresponding path program 17 times [2021-01-07 05:44:58,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:58,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950304642] [2021-01-07 05:44:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:44:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:44:58,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950304642] [2021-01-07 05:44:58,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318273690] [2021-01-07 05:44:58,531 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:44:59,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-01-07 05:44:59,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:44:59,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:44:59,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:44:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:44:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:44:59,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-01-07 05:44:59,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258787196] [2021-01-07 05:44:59,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:44:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:44:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:44:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:44:59,317 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 29 states. [2021-01-07 05:44:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:44:59,669 INFO L93 Difference]: Finished difference Result 238 states and 239 transitions. [2021-01-07 05:44:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:44:59,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 137 [2021-01-07 05:44:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:44:59,671 INFO L225 Difference]: With dead ends: 238 [2021-01-07 05:44:59,671 INFO L226 Difference]: Without dead ends: 238 [2021-01-07 05:44:59,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:44:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-01-07 05:44:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 142. [2021-01-07 05:44:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-07 05:44:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2021-01-07 05:44:59,677 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 137 [2021-01-07 05:44:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:44:59,677 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2021-01-07 05:44:59,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:44:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2021-01-07 05:44:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-01-07 05:44:59,678 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:44:59,678 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2021-01-07 05:44:59,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:44:59,894 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:44:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:44:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2087053973, now seen corresponding path program 18 times [2021-01-07 05:44:59,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:44:59,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533311687] [2021-01-07 05:44:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:44:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:45:00,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533311687] [2021-01-07 05:45:00,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96128269] [2021-01-07 05:45:00,495 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:00,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-07 05:45:00,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:00,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:45:00,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:00,966 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 [2021-01-07 05:45:00,967 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:45:00,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:45:00,972 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:45:00,972 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:45:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 101 proven. 120 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2021-01-07 05:45:01,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:01,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 41 [2021-01-07 05:45:01,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615951910] [2021-01-07 05:45:01,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:45:01,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:45:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=973, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:45:01,435 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 41 states. [2021-01-07 05:45:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:03,069 INFO L93 Difference]: Finished difference Result 231 states and 250 transitions. [2021-01-07 05:45:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:45:03,070 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 141 [2021-01-07 05:45:03,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:03,071 INFO L225 Difference]: With dead ends: 231 [2021-01-07 05:45:03,071 INFO L226 Difference]: Without dead ends: 231 [2021-01-07 05:45:03,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1294, Invalid=2246, Unknown=0, NotChecked=0, Total=3540 [2021-01-07 05:45:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-01-07 05:45:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2021-01-07 05:45:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-07 05:45:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2021-01-07 05:45:03,078 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 141 [2021-01-07 05:45:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:03,078 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2021-01-07 05:45:03,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:45:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2021-01-07 05:45:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-01-07 05:45:03,079 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:03,080 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2021-01-07 05:45:03,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:03,293 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:03,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2024890714, now seen corresponding path program 19 times [2021-01-07 05:45:03,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:03,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527061800] [2021-01-07 05:45:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:45:03,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527061800] [2021-01-07 05:45:03,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645285185] [2021-01-07 05:45:03,905 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:04,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:45:04,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:45:04,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:04,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-01-07 05:45:04,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678474916] [2021-01-07 05:45:04,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:45:04,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:04,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:45:04,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:45:04,197 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 32 states. [2021-01-07 05:45:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:04,568 INFO L93 Difference]: Finished difference Result 264 states and 265 transitions. [2021-01-07 05:45:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:45:04,569 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 153 [2021-01-07 05:45:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:04,571 INFO L225 Difference]: With dead ends: 264 [2021-01-07 05:45:04,571 INFO L226 Difference]: Without dead ends: 264 [2021-01-07 05:45:04,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:45:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-01-07 05:45:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 158. [2021-01-07 05:45:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-01-07 05:45:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2021-01-07 05:45:04,576 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 153 [2021-01-07 05:45:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:04,576 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2021-01-07 05:45:04,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:45:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2021-01-07 05:45:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-07 05:45:04,577 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:04,578 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2021-01-07 05:45:04,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:45:04,787 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 116160003, now seen corresponding path program 20 times [2021-01-07 05:45:04,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:04,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711550684] [2021-01-07 05:45:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:45:05,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711550684] [2021-01-07 05:45:05,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877376971] [2021-01-07 05:45:05,471 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:05,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:45:05,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-07 05:45:05,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:45:05,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:05,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-01-07 05:45:05,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639340859] [2021-01-07 05:45:05,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:45:05,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:05,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:45:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:45:05,786 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 33 states. [2021-01-07 05:45:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:06,233 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2021-01-07 05:45:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:45:06,234 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 157 [2021-01-07 05:45:06,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:06,237 INFO L225 Difference]: With dead ends: 273 [2021-01-07 05:45:06,237 INFO L226 Difference]: Without dead ends: 273 [2021-01-07 05:45:06,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:45:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-01-07 05:45:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 162. [2021-01-07 05:45:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-07 05:45:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2021-01-07 05:45:06,243 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 157 [2021-01-07 05:45:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:06,243 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2021-01-07 05:45:06,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:45:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2021-01-07 05:45:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-07 05:45:06,244 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:06,245 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2021-01-07 05:45:06,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:06,459 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1256543968, now seen corresponding path program 21 times [2021-01-07 05:45:06,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:06,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040438061] [2021-01-07 05:45:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:45:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040438061] [2021-01-07 05:45:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668237496] [2021-01-07 05:45:07,152 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:07,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-07 05:45:07,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:45:07,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:07,305 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 [2021-01-07 05:45:07,306 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:45:07,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:45:07,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:45:07,312 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:45:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 117 proven. 153 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2021-01-07 05:45:07,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:07,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 14] total 46 [2021-01-07 05:45:07,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009382050] [2021-01-07 05:45:07,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:45:07,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:07,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:45:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=1218, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:45:07,849 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 46 states. [2021-01-07 05:45:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:09,804 INFO L93 Difference]: Finished difference Result 263 states and 285 transitions. [2021-01-07 05:45:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-07 05:45:09,805 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 161 [2021-01-07 05:45:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:09,808 INFO L225 Difference]: With dead ends: 263 [2021-01-07 05:45:09,808 INFO L226 Difference]: Without dead ends: 263 [2021-01-07 05:45:09,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1666, Invalid=2890, Unknown=0, NotChecked=0, Total=4556 [2021-01-07 05:45:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-01-07 05:45:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 174. [2021-01-07 05:45:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-01-07 05:45:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2021-01-07 05:45:09,815 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 161 [2021-01-07 05:45:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:09,815 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2021-01-07 05:45:09,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:45:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2021-01-07 05:45:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-01-07 05:45:09,816 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:09,816 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-01-07 05:45:10,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:45:10,030 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1636011121, now seen corresponding path program 22 times [2021-01-07 05:45:10,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:10,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512143677] [2021-01-07 05:45:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:45:10,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512143677] [2021-01-07 05:45:10,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164037612] [2021-01-07 05:45:10,811 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:12,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:45:12,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:12,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:45:12,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:45:12,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:12,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-01-07 05:45:12,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601166446] [2021-01-07 05:45:12,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:45:12,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:12,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:45:12,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:45:12,527 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 36 states. [2021-01-07 05:45:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:12,991 INFO L93 Difference]: Finished difference Result 299 states and 300 transitions. [2021-01-07 05:45:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:45:12,992 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 173 [2021-01-07 05:45:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:12,994 INFO L225 Difference]: With dead ends: 299 [2021-01-07 05:45:12,994 INFO L226 Difference]: Without dead ends: 299 [2021-01-07 05:45:12,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:45:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-01-07 05:45:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 178. [2021-01-07 05:45:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-01-07 05:45:12,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2021-01-07 05:45:13,000 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 173 [2021-01-07 05:45:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:13,000 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2021-01-07 05:45:13,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:45:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2021-01-07 05:45:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-01-07 05:45:13,001 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:13,001 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-01-07 05:45:13,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:13,215 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash -94301362, now seen corresponding path program 23 times [2021-01-07 05:45:13,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:13,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588771032] [2021-01-07 05:45:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:45:14,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588771032] [2021-01-07 05:45:14,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581898565] [2021-01-07 05:45:14,093 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:15,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-01-07 05:45:15,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:15,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:45:15,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:45:16,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:16,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-01-07 05:45:16,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809347764] [2021-01-07 05:45:16,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-07 05:45:16,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:16,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-07 05:45:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:45:16,053 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 37 states. [2021-01-07 05:45:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:16,577 INFO L93 Difference]: Finished difference Result 308 states and 309 transitions. [2021-01-07 05:45:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-07 05:45:16,578 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 177 [2021-01-07 05:45:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:16,579 INFO L225 Difference]: With dead ends: 308 [2021-01-07 05:45:16,579 INFO L226 Difference]: Without dead ends: 308 [2021-01-07 05:45:16,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:45:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-01-07 05:45:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 182. [2021-01-07 05:45:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-07 05:45:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2021-01-07 05:45:16,586 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 177 [2021-01-07 05:45:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:16,586 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2021-01-07 05:45:16,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-07 05:45:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2021-01-07 05:45:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-01-07 05:45:16,587 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:16,587 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-01-07 05:45:16,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-07 05:45:16,801 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1228268459, now seen corresponding path program 24 times [2021-01-07 05:45:16,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:16,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351752456] [2021-01-07 05:45:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-01-07 05:45:17,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351752456] [2021-01-07 05:45:17,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224785322] [2021-01-07 05:45:17,774 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:19,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-01-07 05:45:19,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:19,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-07 05:45:19,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 100 proven. 190 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2021-01-07 05:45:20,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:20,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 16] total 52 [2021-01-07 05:45:20,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305237199] [2021-01-07 05:45:20,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-07 05:45:20,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:20,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-07 05:45:20,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1134, Invalid=1518, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:45:20,074 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 52 states. [2021-01-07 05:45:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:22,918 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2021-01-07 05:45:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:45:22,919 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 181 [2021-01-07 05:45:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:22,921 INFO L225 Difference]: With dead ends: 320 [2021-01-07 05:45:22,922 INFO L226 Difference]: Without dead ends: 320 [2021-01-07 05:45:22,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2469 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3002, Invalid=4830, Unknown=0, NotChecked=0, Total=7832 [2021-01-07 05:45:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-01-07 05:45:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 190. [2021-01-07 05:45:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-01-07 05:45:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2021-01-07 05:45:22,931 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 181 [2021-01-07 05:45:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:22,931 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2021-01-07 05:45:22,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-07 05:45:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2021-01-07 05:45:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-01-07 05:45:22,932 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:22,932 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2021-01-07 05:45:23,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:23,149 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:23,150 INFO L82 PathProgramCache]: Analyzing trace with hash -523653665, now seen corresponding path program 25 times [2021-01-07 05:45:23,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:23,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722060607] [2021-01-07 05:45:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:45:24,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722060607] [2021-01-07 05:45:24,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900079226] [2021-01-07 05:45:24,183 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 [2021-01-07 05:45:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:45:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:45:24,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:24,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-01-07 05:45:24,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901472983] [2021-01-07 05:45:24,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:45:24,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:24,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:45:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:45:24,548 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 39 states. [2021-01-07 05:45:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:25,138 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2021-01-07 05:45:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-07 05:45:25,138 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 189 [2021-01-07 05:45:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:25,140 INFO L225 Difference]: With dead ends: 325 [2021-01-07 05:45:25,140 INFO L226 Difference]: Without dead ends: 325 [2021-01-07 05:45:25,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:45:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-01-07 05:45:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 194. [2021-01-07 05:45:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-01-07 05:45:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2021-01-07 05:45:25,147 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 189 [2021-01-07 05:45:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:25,148 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2021-01-07 05:45:25,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:45:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2021-01-07 05:45:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-01-07 05:45:25,149 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:25,150 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2021-01-07 05:45:25,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:45:25,363 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1400907076, now seen corresponding path program 26 times [2021-01-07 05:45:25,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:25,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513672123] [2021-01-07 05:45:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2787 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:45:26,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513672123] [2021-01-07 05:45:26,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321577062] [2021-01-07 05:45:26,424 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 [2021-01-07 05:45:26,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:45:26,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:26,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:45:26,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2787 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:45:26,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:26,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-01-07 05:45:26,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65916255] [2021-01-07 05:45:26,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:45:26,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:45:26,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:45:26,819 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 40 states. [2021-01-07 05:45:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:27,403 INFO L93 Difference]: Finished difference Result 334 states and 335 transitions. [2021-01-07 05:45:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-07 05:45:27,404 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 193 [2021-01-07 05:45:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:27,407 INFO L225 Difference]: With dead ends: 334 [2021-01-07 05:45:27,407 INFO L226 Difference]: Without dead ends: 334 [2021-01-07 05:45:27,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:45:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-01-07 05:45:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 198. [2021-01-07 05:45:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-07 05:45:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2021-01-07 05:45:27,413 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 193 [2021-01-07 05:45:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:27,414 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2021-01-07 05:45:27,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:45:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2021-01-07 05:45:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-01-07 05:45:27,415 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:27,415 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2021-01-07 05:45:27,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:27,629 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash 627724569, now seen corresponding path program 27 times [2021-01-07 05:45:27,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:27,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827819683] [2021-01-07 05:45:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:45:28,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827819683] [2021-01-07 05:45:28,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270385506] [2021-01-07 05:45:28,769 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:28,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-01-07 05:45:28,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:28,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:45:28,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:28,942 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 [2021-01-07 05:45:28,943 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:45:28,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:45:28,950 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:45:28,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:45:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 145 proven. 231 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2021-01-07 05:45:29,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:29,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 16] total 55 [2021-01-07 05:45:29,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945649441] [2021-01-07 05:45:29,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-07 05:45:29,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:29,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-07 05:45:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=1731, Unknown=0, NotChecked=0, Total=2970 [2021-01-07 05:45:29,634 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 55 states. [2021-01-07 05:45:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:32,481 INFO L93 Difference]: Finished difference Result 319 states and 346 transitions. [2021-01-07 05:45:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-07 05:45:32,481 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 197 [2021-01-07 05:45:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:32,484 INFO L225 Difference]: With dead ends: 319 [2021-01-07 05:45:32,484 INFO L226 Difference]: Without dead ends: 319 [2021-01-07 05:45:32,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2427, Invalid=4215, Unknown=0, NotChecked=0, Total=6642 [2021-01-07 05:45:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-01-07 05:45:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 210. [2021-01-07 05:45:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-07 05:45:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2021-01-07 05:45:32,492 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 197 [2021-01-07 05:45:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:32,492 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2021-01-07 05:45:32,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2021-01-07 05:45:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2021-01-07 05:45:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-01-07 05:45:32,493 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:32,494 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2021-01-07 05:45:32,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:45:32,709 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:32,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1566560982, now seen corresponding path program 28 times [2021-01-07 05:45:32,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:32,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618586278] [2021-01-07 05:45:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3279 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:45:33,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618586278] [2021-01-07 05:45:33,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000106141] [2021-01-07 05:45:33,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:36,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:45:36,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:45:36,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3279 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:45:36,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:36,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-01-07 05:45:36,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876273362] [2021-01-07 05:45:36,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:45:36,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:36,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:45:36,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:45:36,795 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 43 states. [2021-01-07 05:45:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:37,445 INFO L93 Difference]: Finished difference Result 360 states and 361 transitions. [2021-01-07 05:45:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-07 05:45:37,445 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 209 [2021-01-07 05:45:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:37,447 INFO L225 Difference]: With dead ends: 360 [2021-01-07 05:45:37,448 INFO L226 Difference]: Without dead ends: 360 [2021-01-07 05:45:37,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:45:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-01-07 05:45:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 214. [2021-01-07 05:45:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-07 05:45:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2021-01-07 05:45:37,453 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 209 [2021-01-07 05:45:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:37,453 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2021-01-07 05:45:37,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:45:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2021-01-07 05:45:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-07 05:45:37,455 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:37,455 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2021-01-07 05:45:37,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:45:37,670 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1584117369, now seen corresponding path program 29 times [2021-01-07 05:45:37,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:37,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581734188] [2021-01-07 05:45:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:45:38,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581734188] [2021-01-07 05:45:38,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011407546] [2021-01-07 05:45:38,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:53,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2021-01-07 05:45:53,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:53,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:45:53,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:45:53,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:53,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-01-07 05:45:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660228594] [2021-01-07 05:45:53,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-07 05:45:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-07 05:45:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:45:53,308 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 44 states. [2021-01-07 05:45:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:45:53,968 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2021-01-07 05:45:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-07 05:45:53,968 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 213 [2021-01-07 05:45:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:45:53,971 INFO L225 Difference]: With dead ends: 369 [2021-01-07 05:45:53,971 INFO L226 Difference]: Without dead ends: 369 [2021-01-07 05:45:53,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:45:53,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-01-07 05:45:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 218. [2021-01-07 05:45:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-01-07 05:45:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2021-01-07 05:45:53,975 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 213 [2021-01-07 05:45:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:45:53,975 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2021-01-07 05:45:53,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-07 05:45:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2021-01-07 05:45:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-01-07 05:45:53,977 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:45:53,977 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2021-01-07 05:45:54,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:45:54,178 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:45:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:45:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1774653596, now seen corresponding path program 30 times [2021-01-07 05:45:54,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:45:54,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711147072] [2021-01-07 05:45:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:45:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:45:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3597 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:45:55,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711147072] [2021-01-07 05:45:55,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223579270] [2021-01-07 05:45:55,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:45:58,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-07 05:45:58,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:45:58,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:45:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:45:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3597 backedges. 121 proven. 276 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2021-01-07 05:45:59,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:45:59,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 18] total 61 [2021-01-07 05:45:59,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899471335] [2021-01-07 05:45:59,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-07 05:45:59,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:45:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-07 05:45:59,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1588, Invalid=2072, Unknown=0, NotChecked=0, Total=3660 [2021-01-07 05:45:59,008 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 61 states. [2021-01-07 05:46:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:02,879 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2021-01-07 05:46:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-07 05:46:02,880 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 217 [2021-01-07 05:46:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:02,881 INFO L225 Difference]: With dead ends: 381 [2021-01-07 05:46:02,881 INFO L226 Difference]: Without dead ends: 381 [2021-01-07 05:46:02,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3470 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4193, Invalid=6727, Unknown=0, NotChecked=0, Total=10920 [2021-01-07 05:46:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-01-07 05:46:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 226. [2021-01-07 05:46:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-07 05:46:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2021-01-07 05:46:02,889 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 217 [2021-01-07 05:46:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:02,889 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2021-01-07 05:46:02,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2021-01-07 05:46:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2021-01-07 05:46:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-01-07 05:46:02,891 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:02,891 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2021-01-07 05:46:03,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:46:03,105 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:46:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:03,105 INFO L82 PathProgramCache]: Analyzing trace with hash 316705432, now seen corresponding path program 31 times [2021-01-07 05:46:03,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:03,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868757900] [2021-01-07 05:46:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3811 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:46:04,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868757900] [2021-01-07 05:46:04,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221391053] [2021-01-07 05:46:04,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:46:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:04,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-07 05:46:04,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:46:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3811 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:46:05,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:46:05,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-01-07 05:46:05,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732452280] [2021-01-07 05:46:05,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:46:05,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:05,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:46:05,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:46:05,045 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 46 states. [2021-01-07 05:46:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:05,770 INFO L93 Difference]: Finished difference Result 386 states and 387 transitions. [2021-01-07 05:46:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-07 05:46:05,771 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 225 [2021-01-07 05:46:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:05,773 INFO L225 Difference]: With dead ends: 386 [2021-01-07 05:46:05,773 INFO L226 Difference]: Without dead ends: 386 [2021-01-07 05:46:05,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:46:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-01-07 05:46:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 230. [2021-01-07 05:46:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-01-07 05:46:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2021-01-07 05:46:05,780 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 225 [2021-01-07 05:46:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:05,781 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2021-01-07 05:46:05,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:46:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2021-01-07 05:46:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-01-07 05:46:05,782 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:05,782 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2021-01-07 05:46:05,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:46:05,996 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:46:05,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:05,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1949152011, now seen corresponding path program 32 times [2021-01-07 05:46:05,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:05,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818287567] [2021-01-07 05:46:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:46:07,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818287567] [2021-01-07 05:46:07,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357425701] [2021-01-07 05:46:07,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:46:07,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:46:07,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:46:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:46:07,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:46:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:46:07,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:46:07,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-01-07 05:46:07,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619029742] [2021-01-07 05:46:07,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-07 05:46:07,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:07,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-07 05:46:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:46:07,951 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 47 states. [2021-01-07 05:46:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:08,695 INFO L93 Difference]: Finished difference Result 395 states and 396 transitions. [2021-01-07 05:46:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:46:08,696 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 229 [2021-01-07 05:46:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:08,699 INFO L225 Difference]: With dead ends: 395 [2021-01-07 05:46:08,699 INFO L226 Difference]: Without dead ends: 395 [2021-01-07 05:46:08,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:46:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-07 05:46:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 234. [2021-01-07 05:46:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-01-07 05:46:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2021-01-07 05:46:08,705 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 229 [2021-01-07 05:46:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:08,705 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2021-01-07 05:46:08,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-07 05:46:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2021-01-07 05:46:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-01-07 05:46:08,707 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:08,707 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2021-01-07 05:46:08,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:46:08,921 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:46:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:08,922 INFO L82 PathProgramCache]: Analyzing trace with hash -684615470, now seen corresponding path program 33 times [2021-01-07 05:46:08,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:08,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240455139] [2021-01-07 05:46:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4153 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-01-07 05:46:10,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240455139] [2021-01-07 05:46:10,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73612660] [2021-01-07 05:46:10,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:46:10,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-01-07 05:46:10,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:46:10,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:46:10,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:46:10,778 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 [2021-01-07 05:46:10,779 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:46:10,783 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:46:10,784 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:46:10,784 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:46:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4153 backedges. 173 proven. 325 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2021-01-07 05:46:11,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:46:11,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 18] total 64 [2021-01-07 05:46:11,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642359114] [2021-01-07 05:46:11,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-01-07 05:46:11,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:11,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-01-07 05:46:11,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=2333, Unknown=0, NotChecked=0, Total=4032 [2021-01-07 05:46:11,709 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 64 states. [2021-01-07 05:46:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:15,498 INFO L93 Difference]: Finished difference Result 375 states and 407 transitions. [2021-01-07 05:46:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-07 05:46:15,499 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 233 [2021-01-07 05:46:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:15,501 INFO L225 Difference]: With dead ends: 375 [2021-01-07 05:46:15,501 INFO L226 Difference]: Without dead ends: 375 [2021-01-07 05:46:15,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3331, Invalid=5789, Unknown=0, NotChecked=0, Total=9120 [2021-01-07 05:46:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-01-07 05:46:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 246. [2021-01-07 05:46:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-01-07 05:46:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2021-01-07 05:46:15,507 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 233 [2021-01-07 05:46:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:15,507 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2021-01-07 05:46:15,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2021-01-07 05:46:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2021-01-07 05:46:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-01-07 05:46:15,509 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:15,509 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2021-01-07 05:46:15,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-07 05:46:15,723 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:46:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:15,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1191369571, now seen corresponding path program 34 times [2021-01-07 05:46:15,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:15,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891913917] [2021-01-07 05:46:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4564 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:46:17,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891913917] [2021-01-07 05:46:17,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340724516] [2021-01-07 05:46:17,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:46:21,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:46:21,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:46:21,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-07 05:46:21,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:46:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4564 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:46:22,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:46:22,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-01-07 05:46:22,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372233671] [2021-01-07 05:46:22,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-07 05:46:22,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-07 05:46:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:46:22,079 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 50 states. [2021-01-07 05:46:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:22,917 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2021-01-07 05:46:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-07 05:46:22,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 245 [2021-01-07 05:46:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:22,920 INFO L225 Difference]: With dead ends: 421 [2021-01-07 05:46:22,920 INFO L226 Difference]: Without dead ends: 421 [2021-01-07 05:46:22,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:46:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-01-07 05:46:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 250. [2021-01-07 05:46:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-01-07 05:46:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2021-01-07 05:46:22,926 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 245 [2021-01-07 05:46:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:22,926 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2021-01-07 05:46:22,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-07 05:46:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2021-01-07 05:46:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-01-07 05:46:22,928 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:22,928 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2021-01-07 05:46:23,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:46:23,141 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:46:23,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:23,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1527827776, now seen corresponding path program 35 times [2021-01-07 05:46:23,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:23,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882380337] [2021-01-07 05:46:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4749 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:46:25,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882380337] [2021-01-07 05:46:25,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586178626] [2021-01-07 05:46:25,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:13,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-01-07 05:47:13,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-07 05:47:13,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4749 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:47:14,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:14,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-01-07 05:47:14,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458789768] [2021-01-07 05:47:14,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-07 05:47:14,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:14,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-07 05:47:14,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:47:14,172 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand 51 states. [2021-01-07 05:47:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:14,983 INFO L93 Difference]: Finished difference Result 430 states and 431 transitions. [2021-01-07 05:47:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-07 05:47:14,983 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 249 [2021-01-07 05:47:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:14,985 INFO L225 Difference]: With dead ends: 430 [2021-01-07 05:47:14,985 INFO L226 Difference]: Without dead ends: 430 [2021-01-07 05:47:14,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:47:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-01-07 05:47:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 254. [2021-01-07 05:47:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-01-07 05:47:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 255 transitions. [2021-01-07 05:47:14,991 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 255 transitions. Word has length 249 [2021-01-07 05:47:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:14,991 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 255 transitions. [2021-01-07 05:47:14,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-07 05:47:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 255 transitions. [2021-01-07 05:47:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-01-07 05:47:14,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:14,993 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2021-01-07 05:47:15,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:15,206 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -253196131, now seen corresponding path program 36 times [2021-01-07 05:47:15,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:15,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981304358] [2021-01-07 05:47:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4938 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:47:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981304358] [2021-01-07 05:47:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217847785] [2021-01-07 05:47:17,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:23,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-01-07 05:47:23,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:47:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4938 backedges. 142 proven. 378 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2021-01-07 05:47:24,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:24,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 20] total 70 [2021-01-07 05:47:24,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746005189] [2021-01-07 05:47:24,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-01-07 05:47:24,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:24,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-01-07 05:47:24,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=2711, Unknown=0, NotChecked=0, Total=4830 [2021-01-07 05:47:24,703 INFO L87 Difference]: Start difference. First operand 254 states and 255 transitions. Second operand 70 states. [2021-01-07 05:47:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:29,469 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2021-01-07 05:47:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-07 05:47:29,470 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 253 [2021-01-07 05:47:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:29,472 INFO L225 Difference]: With dead ends: 442 [2021-01-07 05:47:29,472 INFO L226 Difference]: Without dead ends: 442 [2021-01-07 05:47:29,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4640 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=5583, Invalid=8937, Unknown=0, NotChecked=0, Total=14520 [2021-01-07 05:47:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-01-07 05:47:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 262. [2021-01-07 05:47:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-01-07 05:47:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2021-01-07 05:47:29,477 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 253 [2021-01-07 05:47:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:29,478 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2021-01-07 05:47:29,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2021-01-07 05:47:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2021-01-07 05:47:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-01-07 05:47:29,479 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:29,480 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-01-07 05:47:29,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:29,695 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:29,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1791259857, now seen corresponding path program 37 times [2021-01-07 05:47:29,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:29,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138020064] [2021-01-07 05:47:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5188 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:47:31,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138020064] [2021-01-07 05:47:31,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678983085] [2021-01-07 05:47:31,538 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:31,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:47:31,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5188 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:47:32,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:32,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-01-07 05:47:32,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919593067] [2021-01-07 05:47:32,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:47:32,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:47:32,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:47:32,028 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 53 states. [2021-01-07 05:47:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:33,006 INFO L93 Difference]: Finished difference Result 447 states and 448 transitions. [2021-01-07 05:47:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-07 05:47:33,006 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 261 [2021-01-07 05:47:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:33,008 INFO L225 Difference]: With dead ends: 447 [2021-01-07 05:47:33,008 INFO L226 Difference]: Without dead ends: 447 [2021-01-07 05:47:33,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:47:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-01-07 05:47:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 266. [2021-01-07 05:47:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-01-07 05:47:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2021-01-07 05:47:33,019 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 261 [2021-01-07 05:47:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:33,019 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2021-01-07 05:47:33,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:47:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2021-01-07 05:47:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-01-07 05:47:33,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:33,021 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-01-07 05:47:33,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-01-07 05:47:33,237 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1366625454, now seen corresponding path program 38 times [2021-01-07 05:47:33,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:33,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272964679] [2021-01-07 05:47:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:47:35,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272964679] [2021-01-07 05:47:35,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277266125] [2021-01-07 05:47:35,320 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:35,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:47:35,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:35,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:47:35,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:47:35,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:35,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-01-07 05:47:35,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788239713] [2021-01-07 05:47:35,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-07 05:47:35,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-07 05:47:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:47:35,872 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand 54 states. [2021-01-07 05:47:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:36,835 INFO L93 Difference]: Finished difference Result 456 states and 457 transitions. [2021-01-07 05:47:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-01-07 05:47:36,835 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 265 [2021-01-07 05:47:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:36,837 INFO L225 Difference]: With dead ends: 456 [2021-01-07 05:47:36,837 INFO L226 Difference]: Without dead ends: 456 [2021-01-07 05:47:36,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:47:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-01-07 05:47:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 270. [2021-01-07 05:47:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-01-07 05:47:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 271 transitions. [2021-01-07 05:47:36,841 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 271 transitions. Word has length 265 [2021-01-07 05:47:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:36,841 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 271 transitions. [2021-01-07 05:47:36,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-07 05:47:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 271 transitions. [2021-01-07 05:47:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-01-07 05:47:36,842 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:36,842 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-01-07 05:47:37,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:37,043 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:37,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1137938933, now seen corresponding path program 39 times [2021-01-07 05:47:37,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:37,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520559386] [2021-01-07 05:47:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5586 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:47:39,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520559386] [2021-01-07 05:47:39,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623522555] [2021-01-07 05:47:39,327 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:39,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-07 05:47:39,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:39,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:47:39,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:39,692 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 [2021-01-07 05:47:39,693 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:39,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:39,699 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:39,699 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5586 backedges. 201 proven. 435 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2021-01-07 05:47:40,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:40,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 20] total 73 [2021-01-07 05:47:40,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122502546] [2021-01-07 05:47:40,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-01-07 05:47:40,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:40,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-01-07 05:47:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2232, Invalid=3024, Unknown=0, NotChecked=0, Total=5256 [2021-01-07 05:47:40,806 INFO L87 Difference]: Start difference. First operand 270 states and 271 transitions. Second operand 73 states. [2021-01-07 05:47:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:45,927 INFO L93 Difference]: Finished difference Result 431 states and 468 transitions. [2021-01-07 05:47:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-07 05:47:45,928 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 269 [2021-01-07 05:47:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:45,929 INFO L225 Difference]: With dead ends: 431 [2021-01-07 05:47:45,930 INFO L226 Difference]: Without dead ends: 431 [2021-01-07 05:47:45,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3059 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4378, Invalid=7612, Unknown=0, NotChecked=0, Total=11990 [2021-01-07 05:47:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-01-07 05:47:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 282. [2021-01-07 05:47:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-01-07 05:47:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2021-01-07 05:47:45,936 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 269 [2021-01-07 05:47:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:45,936 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2021-01-07 05:47:45,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2021-01-07 05:47:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2021-01-07 05:47:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-01-07 05:47:45,938 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:45,938 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2021-01-07 05:47:46,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:46,153 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1094920420, now seen corresponding path program 40 times [2021-01-07 05:47:46,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:46,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702817176] [2021-01-07 05:47:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6061 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-01-07 05:47:48,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702817176] [2021-01-07 05:47:48,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838466195] [2021-01-07 05:47:48,334 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:57,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:47:57,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:57,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-07 05:47:57,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6061 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-01-07 05:47:57,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:57,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-01-07 05:47:57,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170059944] [2021-01-07 05:47:57,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-07 05:47:57,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:57,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-07 05:47:57,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:47:57,434 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand 57 states. [2021-01-07 05:47:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:58,445 INFO L93 Difference]: Finished difference Result 482 states and 483 transitions. [2021-01-07 05:47:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-01-07 05:47:58,446 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 281 [2021-01-07 05:47:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:58,448 INFO L225 Difference]: With dead ends: 482 [2021-01-07 05:47:58,448 INFO L226 Difference]: Without dead ends: 482 [2021-01-07 05:47:58,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:47:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-01-07 05:47:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 286. [2021-01-07 05:47:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-01-07 05:47:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2021-01-07 05:47:58,454 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 281 [2021-01-07 05:47:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:58,454 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2021-01-07 05:47:58,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2021-01-07 05:47:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2021-01-07 05:47:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-01-07 05:47:58,455 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:58,456 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2021-01-07 05:47:58,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-07 05:47:58,671 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2042110343, now seen corresponding path program 41 times [2021-01-07 05:47:58,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:58,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010767761] [2021-01-07 05:47:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:48:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6274 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-01-07 05:48:01,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010767761] [2021-01-07 05:48:01,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901457075] [2021-01-07 05:48:01,000 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true