/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:15:08,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:15:08,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:15:08,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:15:08,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:15:08,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:15:08,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:15:08,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:15:08,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:15:08,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:15:08,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:15:08,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:15:08,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:15:08,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:15:08,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:15:08,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:15:08,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:15:08,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:15:08,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:15:08,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:15:08,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:15:08,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:15:08,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:15:08,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:15:08,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:15:08,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:15:08,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:15:08,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:15:08,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:15:08,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:15:08,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:15:08,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:15:08,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:15:08,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:15:08,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:15:08,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:15:08,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:15:08,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:15:08,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:15:08,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:15:08,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:15:08,450 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:15:08,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:15:08,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:15:08,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:15:08,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:15:08,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:15:08,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:15:08,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:15:08,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:15:08,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:15:08,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:15:08,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:15:08,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:15:08,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:15:08,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:15:08,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:15:08,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:15:08,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:15:08,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:15:08,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:15:08,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:15:08,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:15:08,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:15:08,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:15:08,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:15:08,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:15:08,928 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:15:08,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition03-1.c [2021-01-06 19:15:09,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/af26253cb/e5d92eb10f024dcd8880acb4e470024e/FLAG9c8ac69d8 [2021-01-06 19:15:09,612 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:15:09,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c [2021-01-06 19:15:09,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/af26253cb/e5d92eb10f024dcd8880acb4e470024e/FLAG9c8ac69d8 [2021-01-06 19:15:09,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/af26253cb/e5d92eb10f024dcd8880acb4e470024e [2021-01-06 19:15:10,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:15:10,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:15:10,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:10,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:15:10,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:15:10,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52770070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10, skipping insertion in model container [2021-01-06 19:15:10,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:15:10,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:15:10,292 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/recursive/Addition03-1.c[840,853] [2021-01-06 19:15:10,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:10,314 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:15:10,340 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/recursive/Addition03-1.c[840,853] [2021-01-06 19:15:10,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:10,360 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:15:10,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10 WrapperNode [2021-01-06 19:15:10,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:10,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:10,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:15:10,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:15:10,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:10,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:15:10,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:15:10,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:15:10,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... [2021-01-06 19:15:10,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:15:10,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:15:10,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:15:10,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:15:10,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:15:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:15:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:15:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:15:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:15:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-01-06 19:15:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-01-06 19:15:10,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:15:10,939 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 19:15:10,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:10 BoogieIcfgContainer [2021-01-06 19:15:10,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:15:10,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:15:10,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:15:10,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:15:10,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:15:10" (1/3) ... [2021-01-06 19:15:10,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5201b7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:10, skipping insertion in model container [2021-01-06 19:15:10,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:10" (2/3) ... [2021-01-06 19:15:10,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5201b7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:10, skipping insertion in model container [2021-01-06 19:15:10,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:10" (3/3) ... [2021-01-06 19:15:10,970 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2021-01-06 19:15:10,983 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:15:10,998 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:15:11,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:15:11,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:15:11,130 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:15:11,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:15:11,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:15:11,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:15:11,131 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:15:11,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:15:11,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:15:11,150 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 19:15:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 19:15:11,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:11,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:11,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash -100249854, now seen corresponding path program 1 times [2021-01-06 19:15:11,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:11,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301366588] [2021-01-06 19:15:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:15:11,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301366588] [2021-01-06 19:15:11,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:15:11,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:15:11,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379136564] [2021-01-06 19:15:11,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:15:11,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:15:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:15:11,561 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2021-01-06 19:15:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:11,728 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-01-06 19:15:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:15:11,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 19:15:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:11,740 INFO L225 Difference]: With dead ends: 32 [2021-01-06 19:15:11,741 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 19:15:11,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:15:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 19:15:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 19:15:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 19:15:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-01-06 19:15:11,791 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2021-01-06 19:15:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:11,791 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-01-06 19:15:11,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:15:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-01-06 19:15:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 19:15:11,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:11,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:11,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:15:11,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2083914533, now seen corresponding path program 1 times [2021-01-06 19:15:11,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:11,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440540290] [2021-01-06 19:15:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:15:11,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440540290] [2021-01-06 19:15:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:15:11,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:15:11,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527212890] [2021-01-06 19:15:11,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:15:11,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:11,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:15:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:15:11,868 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 4 states. [2021-01-06 19:15:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:11,911 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-01-06 19:15:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:15:11,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 19:15:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:11,913 INFO L225 Difference]: With dead ends: 29 [2021-01-06 19:15:11,913 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 19:15:11,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:15:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 19:15:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-01-06 19:15:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 19:15:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-01-06 19:15:11,930 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-01-06 19:15:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:11,931 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-01-06 19:15:11,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:15:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-01-06 19:15:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 19:15:11,935 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:11,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:11,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:15:11,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:11,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1402250658, now seen corresponding path program 1 times [2021-01-06 19:15:11,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:11,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712075560] [2021-01-06 19:15:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:15:12,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712075560] [2021-01-06 19:15:12,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434024480] [2021-01-06 19:15:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-06 19:15:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:15:12,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:15:12,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:12,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-01-06 19:15:12,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748059338] [2021-01-06 19:15:12,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:15:12,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:15:12,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:15:12,195 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 8 states. [2021-01-06 19:15:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:12,318 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2021-01-06 19:15:12,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 19:15:12,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 19:15:12,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:12,320 INFO L225 Difference]: With dead ends: 49 [2021-01-06 19:15:12,321 INFO L226 Difference]: Without dead ends: 31 [2021-01-06 19:15:12,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:15:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-06 19:15:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-01-06 19:15:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 19:15:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-01-06 19:15:12,331 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 17 [2021-01-06 19:15:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:12,332 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-01-06 19:15:12,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:15:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-01-06 19:15:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 19:15:12,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:12,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:12,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 19:15:12,551 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:12,552 INFO L82 PathProgramCache]: Analyzing trace with hash 574978944, now seen corresponding path program 2 times [2021-01-06 19:15:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141255249] [2021-01-06 19:15:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:15:12,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141255249] [2021-01-06 19:15:12,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039281209] [2021-01-06 19:15:12,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:12,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:12,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:12,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 19:15:12,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:15:12,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:12,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-06 19:15:12,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148753825] [2021-01-06 19:15:12,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 19:15:12,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:12,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 19:15:12,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:15:12,836 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 9 states. [2021-01-06 19:15:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:12,979 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-01-06 19:15:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:15:12,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2021-01-06 19:15:12,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:12,982 INFO L225 Difference]: With dead ends: 38 [2021-01-06 19:15:12,982 INFO L226 Difference]: Without dead ends: 34 [2021-01-06 19:15:12,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-06 19:15:12,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-06 19:15:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-01-06 19:15:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 19:15:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-01-06 19:15:12,992 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 24 [2021-01-06 19:15:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:12,993 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-01-06 19:15:12,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 19:15:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-01-06 19:15:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 19:15:12,994 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:12,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:13,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:13,209 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:13,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1901242716, now seen corresponding path program 3 times [2021-01-06 19:15:13,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:13,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990245275] [2021-01-06 19:15:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:13,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-06 19:15:13,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990245275] [2021-01-06 19:15:13,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866411905] [2021-01-06 19:15:13,410 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 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 [2021-01-06 19:15:13,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 19:15:13,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:13,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 19:15:13,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-06 19:15:13,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:13,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-06 19:15:13,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358157519] [2021-01-06 19:15:13,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 19:15:13,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 19:15:13,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:15:13,567 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 10 states. [2021-01-06 19:15:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:13,728 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-01-06 19:15:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:15:13,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 19:15:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:13,735 INFO L225 Difference]: With dead ends: 41 [2021-01-06 19:15:13,735 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 19:15:13,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:15:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 19:15:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-01-06 19:15:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 19:15:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-01-06 19:15:13,769 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 31 [2021-01-06 19:15:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:13,770 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-01-06 19:15:13,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 19:15:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-01-06 19:15:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 19:15:13,775 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:13,775 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:13,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:13,991 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:13,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1651739394, now seen corresponding path program 4 times [2021-01-06 19:15:13,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:13,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411843678] [2021-01-06 19:15:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 19:15:14,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411843678] [2021-01-06 19:15:14,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200139434] [2021-01-06 19:15:14,212 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 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 [2021-01-06 19:15:14,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:14,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:14,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 19:15:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 19:15:14,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:14,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-06 19:15:14,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452255079] [2021-01-06 19:15:14,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:15:14,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:14,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:15:14,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:15:14,395 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 11 states. [2021-01-06 19:15:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:14,593 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-01-06 19:15:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 19:15:14,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2021-01-06 19:15:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:14,599 INFO L225 Difference]: With dead ends: 44 [2021-01-06 19:15:14,599 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 19:15:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:15:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 19:15:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-01-06 19:15:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-06 19:15:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-01-06 19:15:14,609 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 38 [2021-01-06 19:15:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:14,610 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-01-06 19:15:14,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:15:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-01-06 19:15:14,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 19:15:14,612 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:14,612 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:14,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:14,826 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:14,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:14,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2146751834, now seen corresponding path program 5 times [2021-01-06 19:15:14,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:14,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303287211] [2021-01-06 19:15:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-01-06 19:15:15,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303287211] [2021-01-06 19:15:15,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522229320] [2021-01-06 19:15:15,049 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 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 [2021-01-06 19:15:15,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 19:15:15,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:15,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 19:15:15,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-01-06 19:15:15,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:15,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-06 19:15:15,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036162871] [2021-01-06 19:15:15,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 19:15:15,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 19:15:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-01-06 19:15:15,244 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 12 states. [2021-01-06 19:15:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:15,415 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-01-06 19:15:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 19:15:15,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 19:15:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:15,417 INFO L225 Difference]: With dead ends: 47 [2021-01-06 19:15:15,417 INFO L226 Difference]: Without dead ends: 43 [2021-01-06 19:15:15,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-01-06 19:15:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-06 19:15:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-01-06 19:15:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 19:15:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-01-06 19:15:15,426 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 45 [2021-01-06 19:15:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:15,426 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-01-06 19:15:15,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 19:15:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-01-06 19:15:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 19:15:15,428 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:15,429 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:15,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 19:15:15,644 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash -500606084, now seen corresponding path program 6 times [2021-01-06 19:15:15,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197999406] [2021-01-06 19:15:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-01-06 19:15:15,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197999406] [2021-01-06 19:15:15,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4340612] [2021-01-06 19:15:15,938 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 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 [2021-01-06 19:15:16,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 19:15:16,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:16,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 19:15:16,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-01-06 19:15:16,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:16,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-06 19:15:16,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740203323] [2021-01-06 19:15:16,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 19:15:16,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 19:15:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-01-06 19:15:16,204 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 13 states. [2021-01-06 19:15:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:16,413 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-01-06 19:15:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 19:15:16,413 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2021-01-06 19:15:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:16,415 INFO L225 Difference]: With dead ends: 50 [2021-01-06 19:15:16,415 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 19:15:16,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2021-01-06 19:15:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 19:15:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-01-06 19:15:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-06 19:15:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-01-06 19:15:16,431 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 52 [2021-01-06 19:15:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:16,431 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-01-06 19:15:16,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 19:15:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-01-06 19:15:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 19:15:16,434 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:16,434 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:16,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:16,650 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash -489684568, now seen corresponding path program 7 times [2021-01-06 19:15:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:16,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663323437] [2021-01-06 19:15:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-01-06 19:15:16,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663323437] [2021-01-06 19:15:16,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436234710] [2021-01-06 19:15:16,903 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 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 [2021-01-06 19:15:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:16,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 19:15:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-01-06 19:15:17,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:17,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-06 19:15:17,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41491692] [2021-01-06 19:15:17,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:15:17,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:17,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:15:17,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:15:17,091 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 14 states. [2021-01-06 19:15:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:17,287 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-01-06 19:15:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 19:15:17,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2021-01-06 19:15:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:17,289 INFO L225 Difference]: With dead ends: 53 [2021-01-06 19:15:17,289 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 19:15:17,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2021-01-06 19:15:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 19:15:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-01-06 19:15:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 19:15:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-01-06 19:15:17,299 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 59 [2021-01-06 19:15:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:17,299 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-01-06 19:15:17,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:15:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-01-06 19:15:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:15:17,302 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:17,303 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:17,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:17,511 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:17,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1829392122, now seen corresponding path program 8 times [2021-01-06 19:15:17,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:17,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083380915] [2021-01-06 19:15:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-01-06 19:15:17,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083380915] [2021-01-06 19:15:17,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370218218] [2021-01-06 19:15:17,863 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 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 [2021-01-06 19:15:17,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:17,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:17,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 19:15:17,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-01-06 19:15:18,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:18,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-06 19:15:18,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376763280] [2021-01-06 19:15:18,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 19:15:18,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 19:15:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:15:18,084 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 15 states. [2021-01-06 19:15:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:18,290 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-01-06 19:15:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 19:15:18,291 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2021-01-06 19:15:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:18,292 INFO L225 Difference]: With dead ends: 56 [2021-01-06 19:15:18,292 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 19:15:18,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2021-01-06 19:15:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 19:15:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-01-06 19:15:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 19:15:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-01-06 19:15:18,301 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 66 [2021-01-06 19:15:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:18,301 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-01-06 19:15:18,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 19:15:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-01-06 19:15:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:15:18,303 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:18,303 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:18,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 19:15:18,517 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1199719510, now seen corresponding path program 9 times [2021-01-06 19:15:18,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:18,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953100997] [2021-01-06 19:15:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-01-06 19:15:18,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953100997] [2021-01-06 19:15:18,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584096923] [2021-01-06 19:15:18,896 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 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 [2021-01-06 19:15:18,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 19:15:18,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:18,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 19:15:18,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-01-06 19:15:19,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:19,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-01-06 19:15:19,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226139361] [2021-01-06 19:15:19,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 19:15:19,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 19:15:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-01-06 19:15:19,146 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 16 states. [2021-01-06 19:15:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:19,377 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-01-06 19:15:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 19:15:19,378 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2021-01-06 19:15:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:19,379 INFO L225 Difference]: With dead ends: 59 [2021-01-06 19:15:19,380 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 19:15:19,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2021-01-06 19:15:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 19:15:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-01-06 19:15:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 19:15:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-06 19:15:19,387 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 73 [2021-01-06 19:15:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:19,388 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-06 19:15:19,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 19:15:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-06 19:15:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 19:15:19,389 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:19,389 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:19,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:19,603 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash -407015560, now seen corresponding path program 10 times [2021-01-06 19:15:19,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:19,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862785744] [2021-01-06 19:15:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-01-06 19:15:20,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862785744] [2021-01-06 19:15:20,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624535404] [2021-01-06 19:15:20,013 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 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 [2021-01-06 19:15:20,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:20,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:20,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 19:15:20,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-01-06 19:15:20,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:20,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-06 19:15:20,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836565069] [2021-01-06 19:15:20,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 19:15:20,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 19:15:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:15:20,290 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 17 states. [2021-01-06 19:15:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:20,533 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-01-06 19:15:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 19:15:20,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2021-01-06 19:15:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:20,534 INFO L225 Difference]: With dead ends: 62 [2021-01-06 19:15:20,534 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 19:15:20,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-01-06 19:15:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 19:15:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-01-06 19:15:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 19:15:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-01-06 19:15:20,542 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 80 [2021-01-06 19:15:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:20,542 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-01-06 19:15:20,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 19:15:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-01-06 19:15:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 19:15:20,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:20,544 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:20,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:20,759 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1560921940, now seen corresponding path program 11 times [2021-01-06 19:15:20,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:20,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73780290] [2021-01-06 19:15:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-01-06 19:15:21,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73780290] [2021-01-06 19:15:21,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530886492] [2021-01-06 19:15:21,264 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 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 [2021-01-06 19:15:21,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-06 19:15:21,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:21,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 19:15:21,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-01-06 19:15:21,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:21,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-06 19:15:21,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618282556] [2021-01-06 19:15:21,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 19:15:21,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:21,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 19:15:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:15:21,594 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 18 states. [2021-01-06 19:15:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:21,879 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2021-01-06 19:15:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 19:15:21,880 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 87 [2021-01-06 19:15:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:21,881 INFO L225 Difference]: With dead ends: 65 [2021-01-06 19:15:21,881 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 19:15:21,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2021-01-06 19:15:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 19:15:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-01-06 19:15:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 19:15:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-01-06 19:15:21,905 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 87 [2021-01-06 19:15:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:21,906 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-01-06 19:15:21,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 19:15:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-01-06 19:15:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-06 19:15:21,908 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:21,908 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:22,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 19:15:22,122 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:22,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1316019446, now seen corresponding path program 12 times [2021-01-06 19:15:22,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:22,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667247169] [2021-01-06 19:15:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-01-06 19:15:22,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667247169] [2021-01-06 19:15:22,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276693620] [2021-01-06 19:15:22,698 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 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 [2021-01-06 19:15:22,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-06 19:15:22,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:22,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 19:15:22,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-01-06 19:15:22,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:22,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-06 19:15:22,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726684720] [2021-01-06 19:15:22,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 19:15:22,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 19:15:22,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2021-01-06 19:15:22,987 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 19 states. [2021-01-06 19:15:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:23,260 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-01-06 19:15:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 19:15:23,260 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2021-01-06 19:15:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:23,261 INFO L225 Difference]: With dead ends: 68 [2021-01-06 19:15:23,261 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 19:15:23,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 19:15:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 19:15:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-01-06 19:15:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-06 19:15:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-01-06 19:15:23,268 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 94 [2021-01-06 19:15:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:23,268 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-01-06 19:15:23,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 19:15:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-01-06 19:15:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-06 19:15:23,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:23,270 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:23,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 19:15:23,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1048271022, now seen corresponding path program 13 times [2021-01-06 19:15:23,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:23,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066244882] [2021-01-06 19:15:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-01-06 19:15:24,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066244882] [2021-01-06 19:15:24,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109062649] [2021-01-06 19:15:24,062 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 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 [2021-01-06 19:15:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:24,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 19:15:24,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-01-06 19:15:24,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:24,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-06 19:15:24,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261330325] [2021-01-06 19:15:24,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 19:15:24,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:24,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 19:15:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-01-06 19:15:24,479 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 20 states. [2021-01-06 19:15:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:24,772 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-01-06 19:15:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 19:15:24,773 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 101 [2021-01-06 19:15:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:24,774 INFO L225 Difference]: With dead ends: 71 [2021-01-06 19:15:24,774 INFO L226 Difference]: Without dead ends: 67 [2021-01-06 19:15:24,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 19:15:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-06 19:15:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-01-06 19:15:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 19:15:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-01-06 19:15:24,781 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 101 [2021-01-06 19:15:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:24,781 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-01-06 19:15:24,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 19:15:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-01-06 19:15:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-01-06 19:15:24,783 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:24,783 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:24,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 19:15:24,998 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:24,999 INFO L82 PathProgramCache]: Analyzing trace with hash 368228212, now seen corresponding path program 14 times [2021-01-06 19:15:24,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:25,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965847078] [2021-01-06 19:15:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-01-06 19:15:25,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965847078] [2021-01-06 19:15:25,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620888232] [2021-01-06 19:15:25,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:25,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:25,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:25,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 19:15:25,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-01-06 19:15:25,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:25,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-01-06 19:15:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866298790] [2021-01-06 19:15:25,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 19:15:25,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:25,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 19:15:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2021-01-06 19:15:25,960 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 21 states. [2021-01-06 19:15:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:26,263 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-01-06 19:15:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 19:15:26,263 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2021-01-06 19:15:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:26,264 INFO L225 Difference]: With dead ends: 74 [2021-01-06 19:15:26,265 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 19:15:26,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 19:15:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 19:15:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-01-06 19:15:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 19:15:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-01-06 19:15:26,271 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 108 [2021-01-06 19:15:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:26,271 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-01-06 19:15:26,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 19:15:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-01-06 19:15:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-01-06 19:15:26,273 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:26,273 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:26,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:26,489 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2075065264, now seen corresponding path program 15 times [2021-01-06 19:15:26,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:26,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221293484] [2021-01-06 19:15:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2021-01-06 19:15:27,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221293484] [2021-01-06 19:15:27,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089896627] [2021-01-06 19:15:27,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:27,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-06 19:15:27,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 19:15:27,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2021-01-06 19:15:27,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:27,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-06 19:15:27,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182509350] [2021-01-06 19:15:27,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 19:15:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 19:15:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2021-01-06 19:15:27,516 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 22 states. [2021-01-06 19:15:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:27,890 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-01-06 19:15:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 19:15:27,890 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2021-01-06 19:15:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:27,892 INFO L225 Difference]: With dead ends: 77 [2021-01-06 19:15:27,892 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 19:15:27,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 19:15:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 19:15:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-01-06 19:15:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 19:15:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-01-06 19:15:27,899 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 115 [2021-01-06 19:15:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:27,900 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-01-06 19:15:27,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 19:15:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-01-06 19:15:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-06 19:15:27,902 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:27,902 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:28,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 19:15:28,115 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1370562290, now seen corresponding path program 16 times [2021-01-06 19:15:28,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:28,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190543614] [2021-01-06 19:15:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-01-06 19:15:28,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190543614] [2021-01-06 19:15:28,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753914897] [2021-01-06 19:15:28,892 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 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 [2021-01-06 19:15:28,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:28,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:28,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 19:15:28,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-01-06 19:15:29,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:29,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-06 19:15:29,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441592611] [2021-01-06 19:15:29,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 19:15:29,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 19:15:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2021-01-06 19:15:29,202 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 23 states. [2021-01-06 19:15:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:29,522 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-01-06 19:15:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 19:15:29,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 122 [2021-01-06 19:15:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:29,524 INFO L225 Difference]: With dead ends: 80 [2021-01-06 19:15:29,524 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 19:15:29,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 19:15:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 19:15:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-01-06 19:15:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 19:15:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-01-06 19:15:29,530 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 122 [2021-01-06 19:15:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:29,530 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-01-06 19:15:29,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 19:15:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-01-06 19:15:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-01-06 19:15:29,532 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:29,532 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:29,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 19:15:29,746 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash -107806286, now seen corresponding path program 17 times [2021-01-06 19:15:29,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:29,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215365652] [2021-01-06 19:15:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-01-06 19:15:30,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215365652] [2021-01-06 19:15:30,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654872451] [2021-01-06 19:15:30,723 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 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 [2021-01-06 19:15:30,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-06 19:15:30,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:30,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 19:15:30,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-01-06 19:15:31,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:31,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-01-06 19:15:31,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880974173] [2021-01-06 19:15:31,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-06 19:15:31,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-06 19:15:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2021-01-06 19:15:31,109 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 24 states. [2021-01-06 19:15:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:31,466 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2021-01-06 19:15:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 19:15:31,466 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 129 [2021-01-06 19:15:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:31,469 INFO L225 Difference]: With dead ends: 83 [2021-01-06 19:15:31,469 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 19:15:31,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 19:15:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 19:15:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-01-06 19:15:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 19:15:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-01-06 19:15:31,475 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 129 [2021-01-06 19:15:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:31,476 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-01-06 19:15:31,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-06 19:15:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-01-06 19:15:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-01-06 19:15:31,478 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:31,478 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:31,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:31,692 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:31,693 INFO L82 PathProgramCache]: Analyzing trace with hash -642108560, now seen corresponding path program 18 times [2021-01-06 19:15:31,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:31,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682270026] [2021-01-06 19:15:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-01-06 19:15:32,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682270026] [2021-01-06 19:15:32,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746971034] [2021-01-06 19:15:32,682 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 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 [2021-01-06 19:15:32,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-06 19:15:32,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:32,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 19:15:32,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-01-06 19:15:33,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:33,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-06 19:15:33,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248217404] [2021-01-06 19:15:33,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-06 19:15:33,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:33,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-06 19:15:33,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2021-01-06 19:15:33,058 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 25 states. [2021-01-06 19:15:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:33,462 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-01-06 19:15:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 19:15:33,462 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2021-01-06 19:15:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:33,464 INFO L225 Difference]: With dead ends: 86 [2021-01-06 19:15:33,464 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 19:15:33,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 19:15:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 19:15:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-01-06 19:15:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 19:15:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-01-06 19:15:33,471 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 136 [2021-01-06 19:15:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:33,472 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-01-06 19:15:33,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-06 19:15:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-01-06 19:15:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-01-06 19:15:33,473 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:33,474 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:33,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:33,690 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1602833076, now seen corresponding path program 19 times [2021-01-06 19:15:33,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:33,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744892840] [2021-01-06 19:15:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2021-01-06 19:15:34,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744892840] [2021-01-06 19:15:34,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895827227] [2021-01-06 19:15:34,755 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 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 [2021-01-06 19:15:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:34,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 19:15:34,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2021-01-06 19:15:35,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:35,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-06 19:15:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419993152] [2021-01-06 19:15:35,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-06 19:15:35,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-06 19:15:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2021-01-06 19:15:35,122 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 26 states. [2021-01-06 19:15:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:35,564 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2021-01-06 19:15:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 19:15:35,564 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 143 [2021-01-06 19:15:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:35,566 INFO L225 Difference]: With dead ends: 89 [2021-01-06 19:15:35,566 INFO L226 Difference]: Without dead ends: 85 [2021-01-06 19:15:35,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 19:15:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-06 19:15:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-01-06 19:15:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-06 19:15:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-01-06 19:15:35,573 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 143 [2021-01-06 19:15:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:35,574 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-01-06 19:15:35,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-06 19:15:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-01-06 19:15:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-06 19:15:35,575 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:35,575 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:35,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:35,789 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:35,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1891374318, now seen corresponding path program 20 times [2021-01-06 19:15:35,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:35,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773844758] [2021-01-06 19:15:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-01-06 19:15:37,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773844758] [2021-01-06 19:15:37,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435717507] [2021-01-06 19:15:37,081 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 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 [2021-01-06 19:15:37,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:37,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 19:15:37,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-01-06 19:15:37,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:37,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-01-06 19:15:37,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269323830] [2021-01-06 19:15:37,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 19:15:37,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 19:15:37,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2021-01-06 19:15:37,459 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 27 states. [2021-01-06 19:15:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:37,899 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-01-06 19:15:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 19:15:37,899 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 150 [2021-01-06 19:15:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:37,901 INFO L225 Difference]: With dead ends: 92 [2021-01-06 19:15:37,901 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 19:15:37,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 19:15:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 19:15:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-01-06 19:15:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 19:15:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-01-06 19:15:37,907 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 150 [2021-01-06 19:15:37,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:37,908 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-01-06 19:15:37,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 19:15:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-01-06 19:15:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-06 19:15:37,910 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:37,910 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:38,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 19:15:38,124 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:38,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1219250506, now seen corresponding path program 21 times [2021-01-06 19:15:38,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:38,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225394200] [2021-01-06 19:15:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2021-01-06 19:15:39,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225394200] [2021-01-06 19:15:39,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346920188] [2021-01-06 19:15:39,339 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 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 [2021-01-06 19:15:39,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-01-06 19:15:39,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 19:15:39,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2021-01-06 19:15:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:39,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-01-06 19:15:39,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865037492] [2021-01-06 19:15:39,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 19:15:39,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:39,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 19:15:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2021-01-06 19:15:39,763 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 28 states. [2021-01-06 19:15:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:40,202 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-01-06 19:15:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 19:15:40,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 157 [2021-01-06 19:15:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:40,204 INFO L225 Difference]: With dead ends: 95 [2021-01-06 19:15:40,204 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 19:15:40,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 19:15:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 19:15:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-06 19:15:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 19:15:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2021-01-06 19:15:40,214 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 157 [2021-01-06 19:15:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:40,215 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2021-01-06 19:15:40,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 19:15:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2021-01-06 19:15:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-01-06 19:15:40,218 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:40,218 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:40,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 19:15:40,432 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:40,432 INFO L82 PathProgramCache]: Analyzing trace with hash -368778388, now seen corresponding path program 22 times [2021-01-06 19:15:40,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:40,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274284162] [2021-01-06 19:15:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2021-01-06 19:15:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274284162] [2021-01-06 19:15:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586887471] [2021-01-06 19:15:41,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:41,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:41,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:41,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-06 19:15:41,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2021-01-06 19:15:42,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:42,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-06 19:15:42,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179811496] [2021-01-06 19:15:42,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-06 19:15:42,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:42,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-06 19:15:42,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2021-01-06 19:15:42,131 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 29 states. [2021-01-06 19:15:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:42,686 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-01-06 19:15:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 19:15:42,686 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 164 [2021-01-06 19:15:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:42,688 INFO L225 Difference]: With dead ends: 98 [2021-01-06 19:15:42,688 INFO L226 Difference]: Without dead ends: 94 [2021-01-06 19:15:42,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 19:15:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-06 19:15:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-01-06 19:15:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 19:15:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-01-06 19:15:42,698 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 164 [2021-01-06 19:15:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:42,698 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-01-06 19:15:42,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-06 19:15:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-01-06 19:15:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-01-06 19:15:42,700 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:42,700 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:42,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:42,914 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash -954980936, now seen corresponding path program 23 times [2021-01-06 19:15:42,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:42,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999947576] [2021-01-06 19:15:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2021-01-06 19:15:44,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999947576] [2021-01-06 19:15:44,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900650365] [2021-01-06 19:15:44,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:44,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-01-06 19:15:44,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:44,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 19:15:44,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2021-01-06 19:15:44,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:44,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-01-06 19:15:44,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475298689] [2021-01-06 19:15:44,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-06 19:15:44,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:44,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-06 19:15:44,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2021-01-06 19:15:44,891 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 30 states. [2021-01-06 19:15:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:45,474 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-06 19:15:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 19:15:45,475 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 171 [2021-01-06 19:15:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:45,477 INFO L225 Difference]: With dead ends: 101 [2021-01-06 19:15:45,477 INFO L226 Difference]: Without dead ends: 97 [2021-01-06 19:15:45,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2021-01-06 19:15:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-06 19:15:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-01-06 19:15:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-06 19:15:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2021-01-06 19:15:45,484 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 171 [2021-01-06 19:15:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:45,484 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2021-01-06 19:15:45,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-06 19:15:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2021-01-06 19:15:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-01-06 19:15:45,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:45,486 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:45,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 19:15:45,701 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1333968618, now seen corresponding path program 24 times [2021-01-06 19:15:45,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:45,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577550106] [2021-01-06 19:15:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-01-06 19:15:47,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577550106] [2021-01-06 19:15:47,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471399069] [2021-01-06 19:15:47,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:47,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-06 19:15:47,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:47,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-06 19:15:47,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-01-06 19:15:47,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:47,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-06 19:15:47,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192735052] [2021-01-06 19:15:47,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-06 19:15:47,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-06 19:15:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2021-01-06 19:15:47,704 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 31 states. [2021-01-06 19:15:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:48,195 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-01-06 19:15:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 19:15:48,196 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 178 [2021-01-06 19:15:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:48,197 INFO L225 Difference]: With dead ends: 104 [2021-01-06 19:15:48,197 INFO L226 Difference]: Without dead ends: 100 [2021-01-06 19:15:48,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2021-01-06 19:15:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-06 19:15:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-01-06 19:15:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-06 19:15:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2021-01-06 19:15:48,205 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 178 [2021-01-06 19:15:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:48,205 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2021-01-06 19:15:48,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-06 19:15:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2021-01-06 19:15:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-01-06 19:15:48,207 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:48,207 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:48,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:48,422 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:48,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1800173498, now seen corresponding path program 25 times [2021-01-06 19:15:48,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:48,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524607943] [2021-01-06 19:15:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2021-01-06 19:15:50,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524607943] [2021-01-06 19:15:50,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474192377] [2021-01-06 19:15:50,011 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 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 [2021-01-06 19:15:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:50,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 19:15:50,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2021-01-06 19:15:50,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:50,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2021-01-06 19:15:50,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191619252] [2021-01-06 19:15:50,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-06 19:15:50,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:50,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-06 19:15:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=579, Unknown=0, NotChecked=0, Total=992 [2021-01-06 19:15:50,409 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 32 states. [2021-01-06 19:15:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:51,018 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2021-01-06 19:15:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-06 19:15:51,019 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 185 [2021-01-06 19:15:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:51,020 INFO L225 Difference]: With dead ends: 107 [2021-01-06 19:15:51,020 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 19:15:51,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 19:15:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 19:15:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-01-06 19:15:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 19:15:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-01-06 19:15:51,027 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 185 [2021-01-06 19:15:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:51,028 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-01-06 19:15:51,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-06 19:15:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-01-06 19:15:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-06 19:15:51,029 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:51,029 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:51,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 19:15:51,243 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash 130271080, now seen corresponding path program 26 times [2021-01-06 19:15:51,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:51,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015806016] [2021-01-06 19:15:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2021-01-06 19:15:53,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015806016] [2021-01-06 19:15:53,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266169916] [2021-01-06 19:15:53,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:53,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:53,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:53,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 19:15:53,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2021-01-06 19:15:53,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:53,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-01-06 19:15:53,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650542684] [2021-01-06 19:15:53,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-06 19:15:53,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-06 19:15:53,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=614, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 19:15:53,737 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 33 states. [2021-01-06 19:15:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:54,366 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-01-06 19:15:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 19:15:54,366 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 192 [2021-01-06 19:15:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:54,368 INFO L225 Difference]: With dead ends: 110 [2021-01-06 19:15:54,369 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 19:15:54,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2021-01-06 19:15:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 19:15:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-01-06 19:15:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-01-06 19:15:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-01-06 19:15:54,376 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 192 [2021-01-06 19:15:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:54,377 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-01-06 19:15:54,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-06 19:15:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-01-06 19:15:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-01-06 19:15:54,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:54,379 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:54,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 19:15:54,594 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:54,594 INFO L82 PathProgramCache]: Analyzing trace with hash -253850436, now seen corresponding path program 27 times [2021-01-06 19:15:54,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:54,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057056244] [2021-01-06 19:15:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2021-01-06 19:15:56,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057056244] [2021-01-06 19:15:56,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033989981] [2021-01-06 19:15:56,545 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 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 [2021-01-06 19:15:56,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-01-06 19:15:56,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:56,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-06 19:15:56,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2021-01-06 19:15:57,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:57,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2021-01-06 19:15:57,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388610765] [2021-01-06 19:15:57,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 19:15:57,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 19:15:57,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=650, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 19:15:57,125 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 34 states. [2021-01-06 19:15:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:57,815 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2021-01-06 19:15:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-06 19:15:57,816 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 199 [2021-01-06 19:15:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:57,818 INFO L225 Difference]: With dead ends: 113 [2021-01-06 19:15:57,819 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 19:15:57,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2021-01-06 19:15:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 19:15:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-01-06 19:15:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 19:15:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2021-01-06 19:15:57,826 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 199 [2021-01-06 19:15:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:57,827 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2021-01-06 19:15:57,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 19:15:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2021-01-06 19:15:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-01-06 19:15:57,828 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:57,829 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:58,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 19:15:58,044 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash -67756826, now seen corresponding path program 28 times [2021-01-06 19:15:58,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:58,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154070889] [2021-01-06 19:15:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2021-01-06 19:15:59,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154070889] [2021-01-06 19:15:59,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090487116] [2021-01-06 19:15:59,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:59,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:59,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:59,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 19:15:59,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2021-01-06 19:16:00,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:00,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-06 19:16:00,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409004756] [2021-01-06 19:16:00,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 19:16:00,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 19:16:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=687, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 19:16:00,319 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 35 states. [2021-01-06 19:16:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:01,028 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-01-06 19:16:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 19:16:01,030 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 206 [2021-01-06 19:16:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:01,032 INFO L225 Difference]: With dead ends: 116 [2021-01-06 19:16:01,032 INFO L226 Difference]: Without dead ends: 112 [2021-01-06 19:16:01,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2021-01-06 19:16:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-06 19:16:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-01-06 19:16:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 19:16:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2021-01-06 19:16:01,040 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 206 [2021-01-06 19:16:01,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:01,040 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2021-01-06 19:16:01,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 19:16:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2021-01-06 19:16:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-06 19:16:01,042 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:01,042 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:01,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:16:01,258 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1863075006, now seen corresponding path program 29 times [2021-01-06 19:16:01,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641261307] [2021-01-06 19:16:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2021-01-06 19:16:03,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641261307] [2021-01-06 19:16:03,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593931087] [2021-01-06 19:16:03,165 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 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 [2021-01-06 19:16:03,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-06 19:16:03,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-06 19:16:03,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2021-01-06 19:16:03,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:03,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-01-06 19:16:03,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652972794] [2021-01-06 19:16:03,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-06 19:16:03,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:03,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-06 19:16:03,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=725, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 19:16:03,864 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 36 states. [2021-01-06 19:16:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:04,632 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2021-01-06 19:16:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-06 19:16:04,632 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 213 [2021-01-06 19:16:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:04,634 INFO L225 Difference]: With dead ends: 119 [2021-01-06 19:16:04,634 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 19:16:04,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2021-01-06 19:16:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 19:16:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-01-06 19:16:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-01-06 19:16:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2021-01-06 19:16:04,641 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 213 [2021-01-06 19:16:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:04,641 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2021-01-06 19:16:04,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-06 19:16:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2021-01-06 19:16:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-01-06 19:16:04,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:04,643 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:04,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-06 19:16:04,858 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1108877468, now seen corresponding path program 30 times [2021-01-06 19:16:04,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:04,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166588486] [2021-01-06 19:16:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:04,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2021-01-06 19:16:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166588486] [2021-01-06 19:16:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158548903] [2021-01-06 19:16:06,906 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 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 [2021-01-06 19:16:07,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-01-06 19:16:07,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:07,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-06 19:16:07,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2021-01-06 19:16:07,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:07,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-01-06 19:16:07,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507659624] [2021-01-06 19:16:07,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-06 19:16:07,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:07,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-06 19:16:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=764, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 19:16:07,483 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 37 states. [2021-01-06 19:16:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:08,246 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-01-06 19:16:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-06 19:16:08,247 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 220 [2021-01-06 19:16:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:08,248 INFO L225 Difference]: With dead ends: 122 [2021-01-06 19:16:08,248 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 19:16:08,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2021-01-06 19:16:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 19:16:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-01-06 19:16:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 19:16:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2021-01-06 19:16:08,256 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 220 [2021-01-06 19:16:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:08,257 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2021-01-06 19:16:08,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-06 19:16:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2021-01-06 19:16:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-01-06 19:16:08,258 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:08,258 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:08,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:16:08,472 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:08,473 INFO L82 PathProgramCache]: Analyzing trace with hash 561479616, now seen corresponding path program 31 times [2021-01-06 19:16:08,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:08,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707372807] [2021-01-06 19:16:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2021-01-06 19:16:10,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707372807] [2021-01-06 19:16:10,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800250870] [2021-01-06 19:16:10,730 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 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 [2021-01-06 19:16:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:10,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-06 19:16:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2021-01-06 19:16:11,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:11,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2021-01-06 19:16:11,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858990560] [2021-01-06 19:16:11,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-06 19:16:11,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:11,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-06 19:16:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=804, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 19:16:11,294 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 38 states. [2021-01-06 19:16:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:12,112 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2021-01-06 19:16:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 19:16:12,112 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 227 [2021-01-06 19:16:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:12,114 INFO L225 Difference]: With dead ends: 125 [2021-01-06 19:16:12,114 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 19:16:12,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2021-01-06 19:16:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 19:16:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-01-06 19:16:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-06 19:16:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-01-06 19:16:12,121 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 227 [2021-01-06 19:16:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:12,122 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-01-06 19:16:12,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-06 19:16:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-01-06 19:16:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-01-06 19:16:12,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:12,124 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:12,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-06 19:16:12,337 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1375260958, now seen corresponding path program 32 times [2021-01-06 19:16:12,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147580166] [2021-01-06 19:16:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2021-01-06 19:16:14,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147580166] [2021-01-06 19:16:14,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164911013] [2021-01-06 19:16:14,776 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 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 [2021-01-06 19:16:14,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:16:14,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:14,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-06 19:16:14,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2021-01-06 19:16:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:15,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-01-06 19:16:15,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392820742] [2021-01-06 19:16:15,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-06 19:16:15,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-06 19:16:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=845, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 19:16:15,318 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 39 states. [2021-01-06 19:16:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:16,063 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-01-06 19:16:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-06 19:16:16,064 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 234 [2021-01-06 19:16:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:16,066 INFO L225 Difference]: With dead ends: 128 [2021-01-06 19:16:16,066 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 19:16:16,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 19:16:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 19:16:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-01-06 19:16:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-06 19:16:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2021-01-06 19:16:16,073 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 234 [2021-01-06 19:16:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:16,074 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2021-01-06 19:16:16,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-06 19:16:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2021-01-06 19:16:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-01-06 19:16:16,075 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:16,076 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:16,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 19:16:16,289 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1037951550, now seen corresponding path program 33 times [2021-01-06 19:16:16,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526336420] [2021-01-06 19:16:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:18,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2021-01-06 19:16:18,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526336420] [2021-01-06 19:16:18,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802269496] [2021-01-06 19:16:18,902 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 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 [2021-01-06 19:16:19,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-01-06 19:16:19,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-06 19:16:19,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2021-01-06 19:16:19,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:19,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-01-06 19:16:19,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228566749] [2021-01-06 19:16:19,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-06 19:16:19,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:19,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-06 19:16:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=887, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 19:16:19,682 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 40 states. [2021-01-06 19:16:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:20,581 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2021-01-06 19:16:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 19:16:20,582 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 241 [2021-01-06 19:16:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:20,583 INFO L225 Difference]: With dead ends: 131 [2021-01-06 19:16:20,583 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 19:16:20,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 19:16:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 19:16:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-01-06 19:16:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 19:16:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-01-06 19:16:20,590 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 241 [2021-01-06 19:16:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:20,591 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-01-06 19:16:20,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-06 19:16:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-01-06 19:16:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-01-06 19:16:20,593 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:20,593 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:20,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-06 19:16:20,808 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash 560081760, now seen corresponding path program 34 times [2021-01-06 19:16:20,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:20,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400297184] [2021-01-06 19:16:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:20,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2021-01-06 19:16:23,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400297184] [2021-01-06 19:16:23,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174612463] [2021-01-06 19:16:23,540 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 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 [2021-01-06 19:16:23,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:16:23,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-06 19:16:23,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2021-01-06 19:16:24,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:24,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-01-06 19:16:24,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66061613] [2021-01-06 19:16:24,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-06 19:16:24,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:24,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-06 19:16:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=930, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 19:16:24,140 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 41 states. [2021-01-06 19:16:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:25,030 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2021-01-06 19:16:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-06 19:16:25,031 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 248 [2021-01-06 19:16:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:25,033 INFO L225 Difference]: With dead ends: 134 [2021-01-06 19:16:25,033 INFO L226 Difference]: Without dead ends: 130 [2021-01-06 19:16:25,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 19:16:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-06 19:16:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2021-01-06 19:16:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-01-06 19:16:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2021-01-06 19:16:25,041 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 248 [2021-01-06 19:16:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:25,041 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2021-01-06 19:16:25,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-06 19:16:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2021-01-06 19:16:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-01-06 19:16:25,043 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:25,043 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:25,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 19:16:25,258 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash -479330620, now seen corresponding path program 35 times [2021-01-06 19:16:25,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:25,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888520994] [2021-01-06 19:16:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-01-06 19:16:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888520994] [2021-01-06 19:16:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697266670] [2021-01-06 19:16:28,517 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 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 [2021-01-06 19:16:29,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-01-06 19:16:29,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:29,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-06 19:16:29,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-01-06 19:16:29,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:29,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2021-01-06 19:16:29,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595399602] [2021-01-06 19:16:29,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-06 19:16:29,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-06 19:16:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=974, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 19:16:29,432 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 42 states. [2021-01-06 19:16:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:30,391 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2021-01-06 19:16:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-06 19:16:30,391 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 255 [2021-01-06 19:16:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:30,393 INFO L225 Difference]: With dead ends: 137 [2021-01-06 19:16:30,393 INFO L226 Difference]: Without dead ends: 133 [2021-01-06 19:16:30,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2021-01-06 19:16:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-06 19:16:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2021-01-06 19:16:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-01-06 19:16:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2021-01-06 19:16:30,400 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 255 [2021-01-06 19:16:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:30,401 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2021-01-06 19:16:30,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-06 19:16:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2021-01-06 19:16:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-01-06 19:16:30,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:30,402 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:30,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-06 19:16:30,616 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:30,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2019101474, now seen corresponding path program 36 times [2021-01-06 19:16:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:30,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707913596] [2021-01-06 19:16:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2021-01-06 19:16:33,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707913596] [2021-01-06 19:16:33,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938327148] [2021-01-06 19:16:33,738 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 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 [2021-01-06 19:16:34,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-01-06 19:16:34,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:34,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 76 conjunts are in the unsatisfiable core [2021-01-06 19:16:34,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2021-01-06 19:16:34,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:34,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-01-06 19:16:34,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240377557] [2021-01-06 19:16:34,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-06 19:16:34,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:34,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-06 19:16:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 19:16:34,495 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 43 states. [2021-01-06 19:16:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:35,519 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2021-01-06 19:16:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 19:16:35,520 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 262 [2021-01-06 19:16:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:35,522 INFO L225 Difference]: With dead ends: 140 [2021-01-06 19:16:35,522 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 19:16:35,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2021-01-06 19:16:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 19:16:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2021-01-06 19:16:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-06 19:16:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2021-01-06 19:16:35,530 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 262 [2021-01-06 19:16:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:35,530 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2021-01-06 19:16:35,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-06 19:16:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2021-01-06 19:16:35,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-01-06 19:16:35,532 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:35,532 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:35,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 19:16:35,748 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:35,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1243415238, now seen corresponding path program 37 times [2021-01-06 19:16:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:35,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588431904] [2021-01-06 19:16:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:35,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2021-01-06 19:16:39,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588431904] [2021-01-06 19:16:39,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017105098] [2021-01-06 19:16:39,375 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 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 [2021-01-06 19:16:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-06 19:16:39,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2021-01-06 19:16:39,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:39,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2021-01-06 19:16:39,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529951576] [2021-01-06 19:16:39,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-06 19:16:39,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:39,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-06 19:16:39,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=1065, Unknown=0, NotChecked=0, Total=1892 [2021-01-06 19:16:39,997 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 44 states. [2021-01-06 19:16:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:40,986 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2021-01-06 19:16:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-06 19:16:40,986 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 269 [2021-01-06 19:16:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:40,988 INFO L225 Difference]: With dead ends: 143 [2021-01-06 19:16:40,988 INFO L226 Difference]: Without dead ends: 139 [2021-01-06 19:16:40,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2021-01-06 19:16:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-01-06 19:16:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2021-01-06 19:16:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-01-06 19:16:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2021-01-06 19:16:40,994 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 269 [2021-01-06 19:16:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:40,995 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2021-01-06 19:16:40,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-06 19:16:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2021-01-06 19:16:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-01-06 19:16:40,997 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:40,997 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:41,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-06 19:16:41,212 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1859933348, now seen corresponding path program 38 times [2021-01-06 19:16:41,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:41,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767607624] [2021-01-06 19:16:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2021-01-06 19:16:45,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767607624] [2021-01-06 19:16:45,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972045619] [2021-01-06 19:16:45,025 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 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 [2021-01-06 19:16:45,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:16:45,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-06 19:16:45,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2021-01-06 19:16:45,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:45,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-01-06 19:16:45,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613521643] [2021-01-06 19:16:45,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-06 19:16:45,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:45,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-06 19:16:45,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=1112, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 19:16:45,706 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 45 states. [2021-01-06 19:16:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:46,724 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2021-01-06 19:16:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-06 19:16:46,725 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 276 [2021-01-06 19:16:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:46,727 INFO L225 Difference]: With dead ends: 146 [2021-01-06 19:16:46,727 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 19:16:46,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2021-01-06 19:16:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 19:16:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2021-01-06 19:16:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-01-06 19:16:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-01-06 19:16:46,736 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 276 [2021-01-06 19:16:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:46,736 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-01-06 19:16:46,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-06 19:16:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-01-06 19:16:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-01-06 19:16:46,738 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:46,738 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:46,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-06 19:16:46,953 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1196493256, now seen corresponding path program 39 times [2021-01-06 19:16:46,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:46,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221025462] [2021-01-06 19:16:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2021-01-06 19:16:51,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221025462] [2021-01-06 19:16:51,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458022386] [2021-01-06 19:16:51,041 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 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 [2021-01-06 19:16:51,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-01-06 19:16:51,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:51,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-06 19:16:51,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2021-01-06 19:16:52,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:52,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2021-01-06 19:16:52,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566587064] [2021-01-06 19:16:52,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-06 19:16:52,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:52,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-06 19:16:52,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=1160, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 19:16:52,010 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 46 states. [2021-01-06 19:16:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:53,067 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-01-06 19:16:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-06 19:16:53,068 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 283 [2021-01-06 19:16:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:53,070 INFO L225 Difference]: With dead ends: 149 [2021-01-06 19:16:53,070 INFO L226 Difference]: Without dead ends: 145 [2021-01-06 19:16:53,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2021-01-06 19:16:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-01-06 19:16:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-01-06 19:16:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-01-06 19:16:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2021-01-06 19:16:53,078 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 283 [2021-01-06 19:16:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:53,079 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2021-01-06 19:16:53,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-06 19:16:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2021-01-06 19:16:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-01-06 19:16:53,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:53,081 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:53,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:16:53,295 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:53,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1422290650, now seen corresponding path program 40 times [2021-01-06 19:16:53,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:53,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178760282] [2021-01-06 19:16:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:16:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2021-01-06 19:16:57,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178760282] [2021-01-06 19:16:57,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474368848] [2021-01-06 19:16:57,730 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 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 [2021-01-06 19:16:57,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:16:57,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:16:57,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 84 conjunts are in the unsatisfiable core [2021-01-06 19:16:57,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:16:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2021-01-06 19:16:58,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:16:58,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-01-06 19:16:58,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498246818] [2021-01-06 19:16:58,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-06 19:16:58,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:16:58,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-06 19:16:58,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=1209, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 19:16:58,483 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 47 states. [2021-01-06 19:16:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:16:59,614 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2021-01-06 19:16:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-06 19:16:59,614 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 290 [2021-01-06 19:16:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:16:59,616 INFO L225 Difference]: With dead ends: 152 [2021-01-06 19:16:59,616 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 19:16:59,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2021-01-06 19:16:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 19:16:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2021-01-06 19:16:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-06 19:16:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2021-01-06 19:16:59,626 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 290 [2021-01-06 19:16:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:16:59,627 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2021-01-06 19:16:59,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-06 19:16:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2021-01-06 19:16:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-01-06 19:16:59,629 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:16:59,629 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:16:59,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:16:59,843 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:16:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:16:59,843 INFO L82 PathProgramCache]: Analyzing trace with hash 311161802, now seen corresponding path program 41 times [2021-01-06 19:16:59,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:16:59,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647729681] [2021-01-06 19:16:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:16:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:16:59,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:16:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2021-01-06 19:17:04,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647729681] [2021-01-06 19:17:04,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719539860] [2021-01-06 19:17:04,294 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 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 [2021-01-06 19:17:05,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-01-06 19:17:05,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:05,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 86 conjunts are in the unsatisfiable core [2021-01-06 19:17:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2021-01-06 19:17:05,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:05,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2021-01-06 19:17:05,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993877250] [2021-01-06 19:17:05,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-06 19:17:05,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:05,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-06 19:17:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=1259, Unknown=0, NotChecked=0, Total=2256 [2021-01-06 19:17:05,581 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 48 states. [2021-01-06 19:17:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:06,732 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2021-01-06 19:17:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-06 19:17:06,733 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 297 [2021-01-06 19:17:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:06,735 INFO L225 Difference]: With dead ends: 155 [2021-01-06 19:17:06,735 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 19:17:06,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2021-01-06 19:17:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 19:17:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2021-01-06 19:17:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2021-01-06 19:17:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2021-01-06 19:17:06,743 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 297 [2021-01-06 19:17:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:06,744 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2021-01-06 19:17:06,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-01-06 19:17:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2021-01-06 19:17:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-01-06 19:17:06,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:06,746 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:06,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-06 19:17:06,960 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:06,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1981636440, now seen corresponding path program 42 times [2021-01-06 19:17:06,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:06,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062606485] [2021-01-06 19:17:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2021-01-06 19:17:11,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062606485] [2021-01-06 19:17:11,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869790059] [2021-01-06 19:17:11,316 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 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 [2021-01-06 19:17:11,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-01-06 19:17:11,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:11,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 88 conjunts are in the unsatisfiable core [2021-01-06 19:17:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2021-01-06 19:17:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-01-06 19:17:12,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214136327] [2021-01-06 19:17:12,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-06 19:17:12,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-06 19:17:12,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1042, Invalid=1310, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 19:17:12,203 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 49 states. [2021-01-06 19:17:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:13,460 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-01-06 19:17:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-06 19:17:13,461 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 304 [2021-01-06 19:17:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:13,462 INFO L225 Difference]: With dead ends: 158 [2021-01-06 19:17:13,463 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 19:17:13,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2021-01-06 19:17:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 19:17:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-01-06 19:17:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 19:17:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2021-01-06 19:17:13,474 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 304 [2021-01-06 19:17:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:13,474 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2021-01-06 19:17:13,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-06 19:17:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2021-01-06 19:17:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-01-06 19:17:13,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:13,477 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:13,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:13,691 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash 598712524, now seen corresponding path program 43 times [2021-01-06 19:17:13,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:13,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882337638] [2021-01-06 19:17:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:13,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:13,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2021-01-06 19:17:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882337638] [2021-01-06 19:17:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742850580] [2021-01-06 19:17:18,202 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 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 [2021-01-06 19:17:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:18,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 90 conjunts are in the unsatisfiable core [2021-01-06 19:17:18,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2021-01-06 19:17:18,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:18,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 50 [2021-01-06 19:17:18,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466329647] [2021-01-06 19:17:18,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-06 19:17:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-06 19:17:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=1362, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 19:17:18,978 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 50 states. [2021-01-06 19:17:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:20,254 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-01-06 19:17:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-06 19:17:20,254 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 311 [2021-01-06 19:17:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:20,257 INFO L225 Difference]: With dead ends: 161 [2021-01-06 19:17:20,257 INFO L226 Difference]: Without dead ends: 157 [2021-01-06 19:17:20,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2021-01-06 19:17:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-06 19:17:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-01-06 19:17:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-01-06 19:17:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2021-01-06 19:17:20,265 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 311 [2021-01-06 19:17:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:20,265 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2021-01-06 19:17:20,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-06 19:17:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2021-01-06 19:17:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-01-06 19:17:20,267 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:20,268 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:20,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:20,483 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:20,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1263967446, now seen corresponding path program 44 times [2021-01-06 19:17:20,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:20,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40382889] [2021-01-06 19:17:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:20,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:20,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2021-01-06 19:17:25,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40382889] [2021-01-06 19:17:25,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130732390] [2021-01-06 19:17:25,217 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 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 [2021-01-06 19:17:25,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:17:25,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:25,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 92 conjunts are in the unsatisfiable core [2021-01-06 19:17:25,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2021-01-06 19:17:25,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:25,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-01-06 19:17:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980163366] [2021-01-06 19:17:25,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-06 19:17:25,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-06 19:17:25,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 19:17:25,962 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 51 states. [2021-01-06 19:17:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:27,287 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-01-06 19:17:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-06 19:17:27,288 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 318 [2021-01-06 19:17:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:27,290 INFO L225 Difference]: With dead ends: 164 [2021-01-06 19:17:27,290 INFO L226 Difference]: Without dead ends: 160 [2021-01-06 19:17:27,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2021-01-06 19:17:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-06 19:17:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-01-06 19:17:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-01-06 19:17:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2021-01-06 19:17:27,297 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 318 [2021-01-06 19:17:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:27,298 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2021-01-06 19:17:27,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-06 19:17:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2021-01-06 19:17:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-01-06 19:17:27,300 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:27,300 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:27,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-06 19:17:27,515 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:27,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1929514802, now seen corresponding path program 45 times [2021-01-06 19:17:27,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:27,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470209927] [2021-01-06 19:17:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:27,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:31,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2021-01-06 19:17:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470209927] [2021-01-06 19:17:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243841224] [2021-01-06 19:17:32,582 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 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 [2021-01-06 19:17:33,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-01-06 19:17:33,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:33,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 94 conjunts are in the unsatisfiable core [2021-01-06 19:17:33,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2021-01-06 19:17:33,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:33,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 52 [2021-01-06 19:17:33,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850554979] [2021-01-06 19:17:33,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-06 19:17:33,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:33,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-06 19:17:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 19:17:33,856 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 52 states. [2021-01-06 19:17:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:35,251 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2021-01-06 19:17:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-01-06 19:17:35,252 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 325 [2021-01-06 19:17:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:35,253 INFO L225 Difference]: With dead ends: 167 [2021-01-06 19:17:35,254 INFO L226 Difference]: Without dead ends: 163 [2021-01-06 19:17:35,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2021-01-06 19:17:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-01-06 19:17:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2021-01-06 19:17:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-01-06 19:17:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2021-01-06 19:17:35,262 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 325 [2021-01-06 19:17:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:35,262 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2021-01-06 19:17:35,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-06 19:17:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2021-01-06 19:17:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-01-06 19:17:35,264 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:35,265 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:35,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-06 19:17:35,480 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash 54544212, now seen corresponding path program 46 times [2021-01-06 19:17:35,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:35,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224626670] [2021-01-06 19:17:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2021-01-06 19:17:40,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224626670] [2021-01-06 19:17:40,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862925728] [2021-01-06 19:17:40,738 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:40,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:17:40,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:40,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 96 conjunts are in the unsatisfiable core [2021-01-06 19:17:40,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2021-01-06 19:17:41,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:41,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-01-06 19:17:41,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145226284] [2021-01-06 19:17:41,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-06 19:17:41,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-06 19:17:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=1524, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 19:17:41,480 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 53 states. [2021-01-06 19:17:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:42,994 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2021-01-06 19:17:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-06 19:17:42,995 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 332 [2021-01-06 19:17:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:42,997 INFO L225 Difference]: With dead ends: 170 [2021-01-06 19:17:42,997 INFO L226 Difference]: Without dead ends: 166 [2021-01-06 19:17:42,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2021-01-06 19:17:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-06 19:17:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2021-01-06 19:17:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 19:17:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2021-01-06 19:17:43,005 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 332 [2021-01-06 19:17:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:43,006 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2021-01-06 19:17:43,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-06 19:17:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2021-01-06 19:17:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-01-06 19:17:43,008 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:43,008 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:43,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-06 19:17:43,221 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1427686352, now seen corresponding path program 47 times [2021-01-06 19:17:43,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:43,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573271579] [2021-01-06 19:17:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:47,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2021-01-06 19:17:48,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573271579] [2021-01-06 19:17:48,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540843416] [2021-01-06 19:17:48,892 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:50,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-01-06 19:17:50,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:50,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 98 conjunts are in the unsatisfiable core [2021-01-06 19:17:50,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2021-01-06 19:17:50,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:50,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 54 [2021-01-06 19:17:50,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971407810] [2021-01-06 19:17:50,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-06 19:17:50,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-06 19:17:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=1580, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 19:17:50,766 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand 54 states. [2021-01-06 19:17:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:17:52,277 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2021-01-06 19:17:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-06 19:17:52,278 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 339 [2021-01-06 19:17:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:17:52,279 INFO L225 Difference]: With dead ends: 173 [2021-01-06 19:17:52,280 INFO L226 Difference]: Without dead ends: 169 [2021-01-06 19:17:52,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2021-01-06 19:17:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-01-06 19:17:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2021-01-06 19:17:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-01-06 19:17:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2021-01-06 19:17:52,293 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 339 [2021-01-06 19:17:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:17:52,294 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2021-01-06 19:17:52,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-06 19:17:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2021-01-06 19:17:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-01-06 19:17:52,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:17:52,296 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:17:52,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:52,511 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:17:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:17:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash -884441390, now seen corresponding path program 48 times [2021-01-06 19:17:52,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:17:52,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057153249] [2021-01-06 19:17:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:17:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:17:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:17:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:17:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2021-01-06 19:17:58,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057153249] [2021-01-06 19:17:58,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013146698] [2021-01-06 19:17:58,611 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:17:59,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-01-06 19:17:59,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:17:59,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-06 19:17:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:17:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2021-01-06 19:17:59,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:17:59,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-01-06 19:17:59,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17436866] [2021-01-06 19:17:59,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-06 19:17:59,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:17:59,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-06 19:17:59,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=1637, Unknown=0, NotChecked=0, Total=2970 [2021-01-06 19:17:59,663 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand 55 states. [2021-01-06 19:18:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:01,177 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-01-06 19:18:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-01-06 19:18:01,178 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 346 [2021-01-06 19:18:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:01,180 INFO L225 Difference]: With dead ends: 176 [2021-01-06 19:18:01,180 INFO L226 Difference]: Without dead ends: 172 [2021-01-06 19:18:01,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2021-01-06 19:18:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-01-06 19:18:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2021-01-06 19:18:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2021-01-06 19:18:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2021-01-06 19:18:01,189 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 346 [2021-01-06 19:18:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:01,190 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2021-01-06 19:18:01,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2021-01-06 19:18:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2021-01-06 19:18:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-01-06 19:18:01,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:01,193 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:01,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-06 19:18:01,408 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash -788399662, now seen corresponding path program 49 times [2021-01-06 19:18:01,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:01,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185509382] [2021-01-06 19:18:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:02,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2021-01-06 19:18:07,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185509382] [2021-01-06 19:18:07,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703694973] [2021-01-06 19:18:07,882 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:08,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 102 conjunts are in the unsatisfiable core [2021-01-06 19:18:08,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:18:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2021-01-06 19:18:08,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:18:08,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 56 [2021-01-06 19:18:08,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131803908] [2021-01-06 19:18:08,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-01-06 19:18:08,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:18:08,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-01-06 19:18:08,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=1695, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 19:18:08,783 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 56 states. [2021-01-06 19:18:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:10,424 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2021-01-06 19:18:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-06 19:18:10,425 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 353 [2021-01-06 19:18:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:10,427 INFO L225 Difference]: With dead ends: 179 [2021-01-06 19:18:10,427 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 19:18:10,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2021-01-06 19:18:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 19:18:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-01-06 19:18:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-06 19:18:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2021-01-06 19:18:10,437 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 353 [2021-01-06 19:18:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:10,437 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2021-01-06 19:18:10,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-01-06 19:18:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2021-01-06 19:18:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-01-06 19:18:10,440 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:10,440 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:10,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:10,656 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -176331952, now seen corresponding path program 50 times [2021-01-06 19:18:10,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:10,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770412287] [2021-01-06 19:18:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2021-01-06 19:18:17,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770412287] [2021-01-06 19:18:17,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164634123] [2021-01-06 19:18:17,853 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:18,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:18:18,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:18:18,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 104 conjunts are in the unsatisfiable core [2021-01-06 19:18:18,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:18:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2021-01-06 19:18:18,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:18:18,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-01-06 19:18:18,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309827937] [2021-01-06 19:18:18,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-06 19:18:18,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:18:18,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-06 19:18:18,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=1754, Unknown=0, NotChecked=0, Total=3192 [2021-01-06 19:18:18,837 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand 57 states. [2021-01-06 19:18:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:20,500 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2021-01-06 19:18:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-01-06 19:18:20,501 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 360 [2021-01-06 19:18:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:20,503 INFO L225 Difference]: With dead ends: 182 [2021-01-06 19:18:20,503 INFO L226 Difference]: Without dead ends: 178 [2021-01-06 19:18:20,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2021-01-06 19:18:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-01-06 19:18:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2021-01-06 19:18:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-01-06 19:18:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2021-01-06 19:18:20,513 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 360 [2021-01-06 19:18:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:20,514 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2021-01-06 19:18:20,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2021-01-06 19:18:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2021-01-06 19:18:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-01-06 19:18:20,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:20,517 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:20,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:20,732 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:20,732 INFO L82 PathProgramCache]: Analyzing trace with hash -31755564, now seen corresponding path program 51 times [2021-01-06 19:18:20,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:20,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370979303] [2021-01-06 19:18:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:21,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2021-01-06 19:18:28,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370979303] [2021-01-06 19:18:28,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683108232] [2021-01-06 19:18:28,211 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:29,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-01-06 19:18:29,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:18:29,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 106 conjunts are in the unsatisfiable core [2021-01-06 19:18:29,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:18:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2021-01-06 19:18:29,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:18:29,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 58 [2021-01-06 19:18:29,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833154373] [2021-01-06 19:18:29,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-01-06 19:18:29,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:18:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-01-06 19:18:29,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=1814, Unknown=0, NotChecked=0, Total=3306 [2021-01-06 19:18:29,966 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 58 states. [2021-01-06 19:18:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:31,684 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2021-01-06 19:18:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-01-06 19:18:31,685 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 367 [2021-01-06 19:18:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:31,687 INFO L225 Difference]: With dead ends: 185 [2021-01-06 19:18:31,687 INFO L226 Difference]: Without dead ends: 181 [2021-01-06 19:18:31,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2021-01-06 19:18:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-01-06 19:18:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2021-01-06 19:18:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-01-06 19:18:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2021-01-06 19:18:31,696 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 367 [2021-01-06 19:18:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:31,697 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2021-01-06 19:18:31,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2021-01-06 19:18:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2021-01-06 19:18:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-01-06 19:18:31,700 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:31,700 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:31,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-01-06 19:18:31,914 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 512562382, now seen corresponding path program 52 times [2021-01-06 19:18:31,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:31,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717120778] [2021-01-06 19:18:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2021-01-06 19:18:39,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717120778] [2021-01-06 19:18:39,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377569576] [2021-01-06 19:18:39,402 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:39,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:18:39,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:18:39,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 108 conjunts are in the unsatisfiable core [2021-01-06 19:18:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:18:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2021-01-06 19:18:40,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:18:40,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-01-06 19:18:40,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637179216] [2021-01-06 19:18:40,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-06 19:18:40,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:18:40,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-06 19:18:40,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1547, Invalid=1875, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 19:18:40,315 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 59 states. [2021-01-06 19:18:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:42,038 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2021-01-06 19:18:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-06 19:18:42,038 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 374 [2021-01-06 19:18:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:42,040 INFO L225 Difference]: With dead ends: 188 [2021-01-06 19:18:42,040 INFO L226 Difference]: Without dead ends: 184 [2021-01-06 19:18:42,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2021-01-06 19:18:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-01-06 19:18:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-01-06 19:18:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-06 19:18:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2021-01-06 19:18:42,049 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 374 [2021-01-06 19:18:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:42,049 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2021-01-06 19:18:42,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2021-01-06 19:18:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2021-01-06 19:18:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-01-06 19:18:42,052 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:42,052 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:42,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:42,265 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash -601420074, now seen corresponding path program 53 times [2021-01-06 19:18:42,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:42,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571361855] [2021-01-06 19:18:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:42,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2021-01-06 19:18:49,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571361855] [2021-01-06 19:18:49,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177160147] [2021-01-06 19:18:49,817 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:18:51,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-01-06 19:18:51,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:18:51,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 110 conjunts are in the unsatisfiable core [2021-01-06 19:18:51,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:18:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2021-01-06 19:18:52,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:18:52,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 60 [2021-01-06 19:18:52,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296156263] [2021-01-06 19:18:52,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-01-06 19:18:52,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:18:52,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-01-06 19:18:52,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=1937, Unknown=0, NotChecked=0, Total=3540 [2021-01-06 19:18:52,320 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand 60 states. [2021-01-06 19:18:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:18:54,143 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2021-01-06 19:18:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-01-06 19:18:54,144 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 381 [2021-01-06 19:18:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:18:54,145 INFO L225 Difference]: With dead ends: 191 [2021-01-06 19:18:54,145 INFO L226 Difference]: Without dead ends: 187 [2021-01-06 19:18:54,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2021-01-06 19:18:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-01-06 19:18:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2021-01-06 19:18:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-06 19:18:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2021-01-06 19:18:54,153 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 381 [2021-01-06 19:18:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:18:54,154 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2021-01-06 19:18:54,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2021-01-06 19:18:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2021-01-06 19:18:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-01-06 19:18:54,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:18:54,156 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:18:54,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-01-06 19:18:54,371 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:18:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:18:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1405465420, now seen corresponding path program 54 times [2021-01-06 19:18:54,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:18:54,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314063746] [2021-01-06 19:18:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:18:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:18:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:18:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:18:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat