/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:48:48,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:48:48,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:48:48,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:48:48,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:48:48,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:48:48,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:48:48,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:48:48,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:48:48,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:48:48,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:48:48,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:48:48,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:48:48,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:48:48,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:48:48,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:48:48,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:48:48,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:48:48,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:48:48,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:48:48,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:48:48,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:48:48,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:48:48,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:48:48,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:48:48,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:48:48,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:48:48,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:48:48,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:48:48,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:48:48,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:48:48,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:48:48,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:48:48,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:48:48,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:48:48,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:48:48,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:48:48,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:48:48,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:48:48,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:48:48,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:48:48,425 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:48:48,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:48:48,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:48:48,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:48:48,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:48:48,426 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:48:48,427 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:48:48,428 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:48:48,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:48:48,428 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:48:48,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:48:48,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:48:48,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:48:48,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:48:48,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:48,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:48:48,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:48:48,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:48:48,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:48:48,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:48:48,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:48:48,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:48:48,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:48:48,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:48:48,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:48:48,947 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:48:48,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-12-23 16:48:49,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9ed2e46/07cc5ff490734dec875fbb7c46f83131/FLAG59eb85055 [2020-12-23 16:48:49,779 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:48:49,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-12-23 16:48:49,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9ed2e46/07cc5ff490734dec875fbb7c46f83131/FLAG59eb85055 [2020-12-23 16:48:50,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2d9ed2e46/07cc5ff490734dec875fbb7c46f83131 [2020-12-23 16:48:50,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:48:50,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:48:50,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:50,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:48:50,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:48:50,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc66ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50, skipping insertion in model container [2020-12-23 16:48:50,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:48:50,135 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] [2020-12-23 16:48:50,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:50,561 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~arr~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~arr~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] [2020-12-23 16:48:50,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:50,689 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:48:50,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50 WrapperNode [2020-12-23 16:48:50,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:50,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:50,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:48:50,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:48:50,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:50,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:48:50,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:48:50,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:48:50,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... [2020-12-23 16:48:50,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:48:50,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:48:50,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:48:50,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:48:50,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:48:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:48:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:48:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:48:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:48:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:48:51,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:48:51,292 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-23 16:48:51,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:51 BoogieIcfgContainer [2020-12-23 16:48:51,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:48:51,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:48:51,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:48:51,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:48:51,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:48:50" (1/3) ... [2020-12-23 16:48:51,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aed781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:51, skipping insertion in model container [2020-12-23 16:48:51,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:50" (2/3) ... [2020-12-23 16:48:51,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aed781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:51, skipping insertion in model container [2020-12-23 16:48:51,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:51" (3/3) ... [2020-12-23 16:48:51,319 INFO L111 eAbstractionObserver]: Analyzing ICFG add_last-alloca-1.i [2020-12-23 16:48:51,333 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:48:51,343 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-12-23 16:48:51,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-12-23 16:48:51,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:48:51,403 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:48:51,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:48:51,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:48:51,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:48:51,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:48:51,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:48:51,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:48:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-23 16:48:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:48:51,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:51,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:48:51,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:51,437 INFO L82 PathProgramCache]: Analyzing trace with hash 889508760, now seen corresponding path program 1 times [2020-12-23 16:48:51,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:51,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892459834] [2020-12-23 16:48:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:51,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892459834] [2020-12-23 16:48:51,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:51,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:48:51,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825917780] [2020-12-23 16:48:51,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:48:51,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:51,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:48:51,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:51,675 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-12-23 16:48:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:51,732 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-12-23 16:48:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:48:51,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 16:48:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:51,744 INFO L225 Difference]: With dead ends: 33 [2020-12-23 16:48:51,745 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 16:48:51,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 16:48:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-23 16:48:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 16:48:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 16:48:51,790 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 6 [2020-12-23 16:48:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:51,790 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 16:48:51,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:48:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 16:48:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:51,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:51,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:51,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:48:51,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:51,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968471, now seen corresponding path program 1 times [2020-12-23 16:48:51,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:51,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494580187] [2020-12-23 16:48:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:51,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494580187] [2020-12-23 16:48:51,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:51,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:48:51,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422306555] [2020-12-23 16:48:51,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:51,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:51,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:51,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:51,861 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-23 16:48:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:51,912 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-23 16:48:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:51,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:48:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:51,914 INFO L225 Difference]: With dead ends: 37 [2020-12-23 16:48:51,914 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 16:48:51,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 16:48:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-12-23 16:48:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-23 16:48:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-12-23 16:48:51,921 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 7 [2020-12-23 16:48:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:51,922 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-12-23 16:48:51,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-12-23 16:48:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:51,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:51,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:51,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:48:51,923 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:51,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968521, now seen corresponding path program 1 times [2020-12-23 16:48:51,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:51,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325310316] [2020-12-23 16:48:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:51,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325310316] [2020-12-23 16:48:51,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:51,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:48:51,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8509232] [2020-12-23 16:48:51,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:48:51,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:48:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:51,966 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 3 states. [2020-12-23 16:48:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:52,006 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-12-23 16:48:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:48:52,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:48:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:52,008 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:48:52,009 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:48:52,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:48:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 16:48:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 16:48:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-23 16:48:52,014 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 7 [2020-12-23 16:48:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:52,014 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-23 16:48:52,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:48:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-23 16:48:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:52,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:52,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:52,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:48:52,016 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:52,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:52,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968522, now seen corresponding path program 1 times [2020-12-23 16:48:52,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:52,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408008829] [2020-12-23 16:48:52,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:52,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408008829] [2020-12-23 16:48:52,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:52,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:48:52,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512276416] [2020-12-23 16:48:52,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:48:52,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:52,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:48:52,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:48:52,127 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 6 states. [2020-12-23 16:48:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:52,208 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-23 16:48:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:48:52,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-23 16:48:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:52,210 INFO L225 Difference]: With dead ends: 30 [2020-12-23 16:48:52,210 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 16:48:52,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:48:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 16:48:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-23 16:48:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 16:48:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-23 16:48:52,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 7 [2020-12-23 16:48:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:52,216 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-23 16:48:52,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:48:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-23 16:48:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:48:52,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:52,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:52,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:48:52,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:52,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2013824102, now seen corresponding path program 1 times [2020-12-23 16:48:52,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:52,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657817418] [2020-12-23 16:48:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:52,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657817418] [2020-12-23 16:48:52,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214777670] [2020-12-23 16:48:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:52,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:48:52,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:52,476 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 16:48:52,478 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:52,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:52,482 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:52,483 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-23 16:48:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:48:52,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:48:52,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-12-23 16:48:52,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137909981] [2020-12-23 16:48:52,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:52,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:52,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:52,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:48:52,529 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2020-12-23 16:48:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:52,625 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-23 16:48:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:52,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 16:48:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:52,629 INFO L225 Difference]: With dead ends: 25 [2020-12-23 16:48:52,629 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 16:48:52,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:48:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 16:48:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 16:48:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 16:48:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-23 16:48:52,639 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2020-12-23 16:48:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:52,640 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-23 16:48:52,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-23 16:48:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:48:52,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:52,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:52,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:52,856 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2013824101, now seen corresponding path program 1 times [2020-12-23 16:48:52,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:52,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338010401] [2020-12-23 16:48:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:52,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338010401] [2020-12-23 16:48:52,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808079144] [2020-12-23 16:48:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:53,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:48:53,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:53,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:53,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-12-23 16:48:53,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119570535] [2020-12-23 16:48:53,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:48:53,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:48:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:48:53,121 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-12-23 16:48:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:53,303 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-23 16:48:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:48:53,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-23 16:48:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:53,305 INFO L225 Difference]: With dead ends: 35 [2020-12-23 16:48:53,305 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 16:48:53,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:48:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 16:48:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-12-23 16:48:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 16:48:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-23 16:48:53,310 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 11 [2020-12-23 16:48:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:53,310 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-23 16:48:53,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:48:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-23 16:48:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:48:53,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:53,311 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:53,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:53,525 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash -2013824051, now seen corresponding path program 1 times [2020-12-23 16:48:53,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:53,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113855682] [2020-12-23 16:48:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:53,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113855682] [2020-12-23 16:48:53,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221942736] [2020-12-23 16:48:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:53,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:48:53,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:53,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:48:53,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-12-23 16:48:53,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794893444] [2020-12-23 16:48:53,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:48:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:53,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:48:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:48:53,693 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-12-23 16:48:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:53,723 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-12-23 16:48:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:48:53,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 16:48:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:53,724 INFO L225 Difference]: With dead ends: 43 [2020-12-23 16:48:53,724 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 16:48:53,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:48:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 16:48:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2020-12-23 16:48:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 16:48:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 16:48:53,729 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 11 [2020-12-23 16:48:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:53,729 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 16:48:53,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:48:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 16:48:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:48:53,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:53,730 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:53,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:53,944 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1333765681, now seen corresponding path program 1 times [2020-12-23 16:48:53,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:53,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418271078] [2020-12-23 16:48:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:54,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418271078] [2020-12-23 16:48:54,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939235042] [2020-12-23 16:48:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:48:54,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:54,136 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 16:48:54,137 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:54,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:54,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:54,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-23 16:48:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:54,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:54,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-23 16:48:54,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033410782] [2020-12-23 16:48:54,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:48:54,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:54,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:48:54,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:48:54,214 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2020-12-23 16:48:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:54,314 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-23 16:48:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:48:54,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-23 16:48:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:54,319 INFO L225 Difference]: With dead ends: 32 [2020-12-23 16:48:54,319 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 16:48:54,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:48:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 16:48:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-12-23 16:48:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 16:48:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-23 16:48:54,328 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 11 [2020-12-23 16:48:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:54,328 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-23 16:48:54,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:48:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-23 16:48:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:48:54,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:54,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:54,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:54,531 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:54,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2109737472, now seen corresponding path program 1 times [2020-12-23 16:48:54,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:54,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848461915] [2020-12-23 16:48:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:48:54,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848461915] [2020-12-23 16:48:54,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:54,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:48:54,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370743765] [2020-12-23 16:48:54,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:54,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:54,635 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-12-23 16:48:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:54,658 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-23 16:48:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:54,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 16:48:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:54,660 INFO L225 Difference]: With dead ends: 28 [2020-12-23 16:48:54,660 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 16:48:54,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 16:48:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 16:48:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 16:48:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-23 16:48:54,663 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-12-23 16:48:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:54,664 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-23 16:48:54,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-23 16:48:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 16:48:54,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:54,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:54,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:48:54,666 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1407328063, now seen corresponding path program 1 times [2020-12-23 16:48:54,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:54,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270039903] [2020-12-23 16:48:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270039903] [2020-12-23 16:48:55,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731126271] [2020-12-23 16:48:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:55,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 16:48:55,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:55,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:48:55,134 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:55,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:55,136 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:55,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:48:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:48:55,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:48:55,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2020-12-23 16:48:55,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895967082] [2020-12-23 16:48:55,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:48:55,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:55,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:48:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:48:55,151 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-12-23 16:48:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:55,250 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-23 16:48:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:48:55,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 16:48:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:55,251 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:48:55,251 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 16:48:55,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:48:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 16:48:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-23 16:48:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 16:48:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-23 16:48:55,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2020-12-23 16:48:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:55,255 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-23 16:48:55,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:48:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-23 16:48:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 16:48:55,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:55,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:55,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:48:55,467 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash 386259709, now seen corresponding path program 1 times [2020-12-23 16:48:55,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:55,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037907680] [2020-12-23 16:48:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:55,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037907680] [2020-12-23 16:48:55,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623900] [2020-12-23 16:48:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:55,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 16:48:55,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:56,033 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:48:56,035 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:56,035 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2020-12-23 16:48:56,037 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:56,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:56,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:56,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2020-12-23 16:48:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:56,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:56,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-12-23 16:48:56,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019092180] [2020-12-23 16:48:56,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:48:56,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:56,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:48:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:48:56,059 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2020-12-23 16:48:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:56,290 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-23 16:48:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:48:56,291 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 16:48:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:56,292 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:48:56,292 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 16:48:56,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:48:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 16:48:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-23 16:48:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 16:48:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-23 16:48:56,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2020-12-23 16:48:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:56,296 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-23 16:48:56,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:48:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-23 16:48:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 16:48:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:56,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:56,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:56,505 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1254493542, now seen corresponding path program 2 times [2020-12-23 16:48:56,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:56,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741114057] [2020-12-23 16:48:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:56,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741114057] [2020-12-23 16:48:56,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213747123] [2020-12-23 16:48:56,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:56,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:48:56,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:48:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 16:48:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:56,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:56,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-12-23 16:48:56,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596719213] [2020-12-23 16:48:56,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:48:56,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:48:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:48:56,857 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2020-12-23 16:48:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:57,059 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-12-23 16:48:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:48:57,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-12-23 16:48:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:57,061 INFO L225 Difference]: With dead ends: 36 [2020-12-23 16:48:57,061 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 16:48:57,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:48:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 16:48:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-12-23 16:48:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:48:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-23 16:48:57,066 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2020-12-23 16:48:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:57,066 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-23 16:48:57,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:48:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-23 16:48:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 16:48:57,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:57,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:57,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:57,276 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:57,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1549441888, now seen corresponding path program 3 times [2020-12-23 16:48:57,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:57,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194701306] [2020-12-23 16:48:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:57,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194701306] [2020-12-23 16:48:57,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037119932] [2020-12-23 16:48:57,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:57,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 16:48:57,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:48:57,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 16:48:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:57,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 16:48:57,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:57,665 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,666 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-23 16:48:57,747 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2020-12-23 16:48:57,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:57,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:23 [2020-12-23 16:48:57,947 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:48:57,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:48:57,951 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:48:57,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:48:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:57,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:57,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2020-12-23 16:48:57,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620173299] [2020-12-23 16:48:57,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 16:48:57,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:57,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 16:48:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:48:57,973 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 20 states. [2020-12-23 16:48:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:58,662 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-12-23 16:48:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:48:58,662 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2020-12-23 16:48:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:58,663 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:48:58,663 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 16:48:58,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2020-12-23 16:48:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 16:48:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-12-23 16:48:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 16:48:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-12-23 16:48:58,672 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29 [2020-12-23 16:48:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:58,673 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-12-23 16:48:58,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 16:48:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-12-23 16:48:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 16:48:58,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:58,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:58,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 16:48:58,876 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:58,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:58,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1131712419, now seen corresponding path program 4 times [2020-12-23 16:48:58,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:58,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015091092] [2020-12-23 16:48:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015091092] [2020-12-23 16:48:59,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946402511] [2020-12-23 16:48:59,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:59,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:48:59,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:48:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 16:48:59,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:48:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:48:59,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-12-23 16:48:59,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204088597] [2020-12-23 16:48:59,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:48:59,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:48:59,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:48:59,327 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 15 states. [2020-12-23 16:48:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,662 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-12-23 16:48:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:48:59,663 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2020-12-23 16:48:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,664 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:48:59,664 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 16:48:59,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:48:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 16:48:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-12-23 16:48:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 16:48:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-23 16:48:59,677 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 33 [2020-12-23 16:48:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,678 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-23 16:48:59,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:48:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-23 16:48:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 16:48:59,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:48:59,883 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash -128978377, now seen corresponding path program 5 times [2020-12-23 16:48:59,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953882530] [2020-12-23 16:48:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953882530] [2020-12-23 16:49:00,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323455860] [2020-12-23 16:49:00,220 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:00,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 16:49:00,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:00,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 16:49:00,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:00,585 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:00,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:49:00,587 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:00,598 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:49:00,600 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:49:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:00,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2020-12-23 16:49:00,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569542458] [2020-12-23 16:49:00,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 16:49:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 16:49:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:49:00,627 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 23 states. [2020-12-23 16:49:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,323 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-12-23 16:49:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:49:01,324 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2020-12-23 16:49:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,324 INFO L225 Difference]: With dead ends: 65 [2020-12-23 16:49:01,325 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 16:49:01,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:49:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 16:49:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-12-23 16:49:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 16:49:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 16:49:01,329 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 40 [2020-12-23 16:49:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,330 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 16:49:01,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 16:49:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 16:49:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 16:49:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:49:01,533 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 749979156, now seen corresponding path program 6 times [2020-12-23 16:49:01,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088146391] [2020-12-23 16:49:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088146391] [2020-12-23 16:49:01,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697287263] [2020-12-23 16:49:01,747 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:01,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 16:49:01,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:01,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 16:49:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:01,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 16:49:01,827 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:01,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:01,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:01,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-23 16:49:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:02,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-12-23 16:49:02,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98854290] [2020-12-23 16:49:02,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:49:02,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:49:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:49:02,216 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 22 states. [2020-12-23 16:49:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,916 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-23 16:49:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:49:02,916 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-12-23 16:49:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,918 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:49:02,918 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 16:49:02,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:49:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 16:49:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-12-23 16:49:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 16:49:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-23 16:49:02,924 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 44 [2020-12-23 16:49:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,924 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-23 16:49:02,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:49:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-23 16:49:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 16:49:02,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:03,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 16:49:03,141 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1410124454, now seen corresponding path program 7 times [2020-12-23 16:49:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:03,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81872355] [2020-12-23 16:49:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 16 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:03,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81872355] [2020-12-23 16:49:03,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961931180] [2020-12-23 16:49:03,571 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 16:49:03,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:04,061 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:04,062 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:04,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:04,064 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:04,065 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 16 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:04,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:04,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2020-12-23 16:49:04,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719565264] [2020-12-23 16:49:04,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 16:49:04,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 16:49:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2020-12-23 16:49:04,099 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 28 states. [2020-12-23 16:49:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:04,956 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-12-23 16:49:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 16:49:04,956 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2020-12-23 16:49:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:04,957 INFO L225 Difference]: With dead ends: 83 [2020-12-23 16:49:04,957 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 16:49:04,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=1289, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:49:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 16:49:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-23 16:49:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 16:49:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-23 16:49:04,966 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2020-12-23 16:49:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:04,970 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-23 16:49:04,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 16:49:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-23 16:49:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 16:49:04,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:04,972 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:05,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 16:49:05,188 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1552754007, now seen corresponding path program 8 times [2020-12-23 16:49:05,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:05,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276786470] [2020-12-23 16:49:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:05,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276786470] [2020-12-23 16:49:05,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136715617] [2020-12-23 16:49:05,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:05,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:05,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:05,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 16:49:05,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:05,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:05,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2020-12-23 16:49:05,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914069348] [2020-12-23 16:49:05,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 16:49:05,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 16:49:05,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:49:05,877 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 23 states. [2020-12-23 16:49:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:06,633 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-12-23 16:49:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:49:06,634 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-12-23 16:49:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:06,635 INFO L225 Difference]: With dead ends: 69 [2020-12-23 16:49:06,635 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 16:49:06,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:49:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 16:49:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2020-12-23 16:49:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 16:49:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-12-23 16:49:06,641 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 55 [2020-12-23 16:49:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:06,641 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-12-23 16:49:06,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 16:49:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-12-23 16:49:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:49:06,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:06,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:06,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 16:49:06,858 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1510058895, now seen corresponding path program 9 times [2020-12-23 16:49:06,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:06,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284892997] [2020-12-23 16:49:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:07,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284892997] [2020-12-23 16:49:07,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429134094] [2020-12-23 16:49:07,421 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:07,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-23 16:49:07,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 16:49:07,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:08,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:08,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2020-12-23 16:49:08,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965292813] [2020-12-23 16:49:08,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 16:49:08,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:08,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 16:49:08,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-12-23 16:49:08,042 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 31 states. [2020-12-23 16:49:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:09,291 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-12-23 16:49:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:49:09,292 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2020-12-23 16:49:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:09,293 INFO L225 Difference]: With dead ends: 101 [2020-12-23 16:49:09,293 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 16:49:09,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 16:49:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 16:49:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-12-23 16:49:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 16:49:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-12-23 16:49:09,298 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2020-12-23 16:49:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:09,298 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-12-23 16:49:09,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 16:49:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-12-23 16:49:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 16:49:09,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:09,299 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:09,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:09,515 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash 205730958, now seen corresponding path program 10 times [2020-12-23 16:49:09,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:09,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769464643] [2020-12-23 16:49:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 28 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:09,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769464643] [2020-12-23 16:49:09,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880388815] [2020-12-23 16:49:09,882 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:09,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:09,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:09,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 16:49:09,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 50 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:10,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:10,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2020-12-23 16:49:10,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853706722] [2020-12-23 16:49:10,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 16:49:10,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:10,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 16:49:10,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:49:10,420 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 27 states. [2020-12-23 16:49:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:11,423 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-12-23 16:49:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:49:11,424 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 66 [2020-12-23 16:49:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:11,425 INFO L225 Difference]: With dead ends: 80 [2020-12-23 16:49:11,425 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 16:49:11,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:49:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 16:49:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-12-23 16:49:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 16:49:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-12-23 16:49:11,429 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 66 [2020-12-23 16:49:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:11,429 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-12-23 16:49:11,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 16:49:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-12-23 16:49:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 16:49:11,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:11,431 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:11,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:11,642 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:11,643 INFO L82 PathProgramCache]: Analyzing trace with hash -399180052, now seen corresponding path program 11 times [2020-12-23 16:49:11,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:11,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507246904] [2020-12-23 16:49:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 26 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:12,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507246904] [2020-12-23 16:49:12,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791714478] [2020-12-23 16:49:12,144 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:12,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-23 16:49:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 16:49:12,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:12,790 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:12,791 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:12,804 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,805 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:12,856 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:12,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,868 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:12,870 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:12,964 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:12,964 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:49:12,966 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:12,976 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:49:12,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:49:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 26 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:13,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:13,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2020-12-23 16:49:13,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180622284] [2020-12-23 16:49:13,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 16:49:13,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 16:49:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:49:13,034 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 35 states. [2020-12-23 16:49:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:14,723 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-12-23 16:49:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 16:49:14,724 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 73 [2020-12-23 16:49:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:14,725 INFO L225 Difference]: With dead ends: 119 [2020-12-23 16:49:14,725 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 16:49:14,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=219, Invalid=2537, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 16:49:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 16:49:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-12-23 16:49:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 16:49:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-23 16:49:14,730 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 73 [2020-12-23 16:49:14,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:14,730 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-23 16:49:14,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 16:49:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-23 16:49:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 16:49:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:14,731 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:14,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:14,934 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash -12330321, now seen corresponding path program 12 times [2020-12-23 16:49:14,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:14,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660820075] [2020-12-23 16:49:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 45 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:15,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660820075] [2020-12-23 16:49:15,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347054408] [2020-12-23 16:49:15,301 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:15,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-23 16:49:15,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:15,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 16:49:15,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:15,587 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 16:49:15,588 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:15,593 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:15,593 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:15,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-12-23 16:49:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 66 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:16,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:16,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-12-23 16:49:16,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211570907] [2020-12-23 16:49:16,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 16:49:16,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:16,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 16:49:16,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 16:49:16,361 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 34 states. [2020-12-23 16:49:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:17,815 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-12-23 16:49:17,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:49:17,824 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 77 [2020-12-23 16:49:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:17,825 INFO L225 Difference]: With dead ends: 91 [2020-12-23 16:49:17,825 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 16:49:17,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=335, Invalid=1921, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 16:49:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 16:49:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-12-23 16:49:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-23 16:49:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-12-23 16:49:17,840 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 77 [2020-12-23 16:49:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:17,840 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-12-23 16:49:17,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 16:49:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-12-23 16:49:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 16:49:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:17,842 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:18,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 16:49:18,056 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:18,057 INFO L82 PathProgramCache]: Analyzing trace with hash -61578837, now seen corresponding path program 13 times [2020-12-23 16:49:18,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:18,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870049058] [2020-12-23 16:49:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870049058] [2020-12-23 16:49:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504688029] [2020-12-23 16:49:18,620 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-23 16:49:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:19,087 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:19,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,098 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:19,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:19,321 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2020-12-23 16:49:19,323 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,334 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,334 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:15 [2020-12-23 16:49:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:19,565 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2020-12-23 16:49:19,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,576 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,578 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,578 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:15 [2020-12-23 16:49:19,652 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:19,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,669 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:19,726 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:19,727 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:19,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:19,803 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,814 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:19,932 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:19,933 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,936 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:19,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:19,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28] total 46 [2020-12-23 16:49:19,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171380134] [2020-12-23 16:49:19,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-23 16:49:19,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:19,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-23 16:49:19,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 16:49:19,994 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 46 states. [2020-12-23 16:49:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:21,826 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-12-23 16:49:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 16:49:21,827 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 84 [2020-12-23 16:49:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:21,828 INFO L225 Difference]: With dead ends: 137 [2020-12-23 16:49:21,828 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 16:49:21,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=306, Invalid=3234, Unknown=0, NotChecked=0, Total=3540 [2020-12-23 16:49:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 16:49:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-12-23 16:49:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 16:49:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-12-23 16:49:21,833 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2020-12-23 16:49:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:21,834 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-12-23 16:49:21,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-23 16:49:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-12-23 16:49:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 16:49:21,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:21,835 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:22,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 16:49:22,043 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:22,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:22,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1699716616, now seen corresponding path program 14 times [2020-12-23 16:49:22,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:22,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873673693] [2020-12-23 16:49:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 66 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:22,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873673693] [2020-12-23 16:49:22,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138207730] [2020-12-23 16:49:22,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:22,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:22,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:22,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 16:49:22,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 98 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:23,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2020-12-23 16:49:23,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736017225] [2020-12-23 16:49:23,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 16:49:23,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 16:49:23,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:49:23,302 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 35 states. [2020-12-23 16:49:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:24,964 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2020-12-23 16:49:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:49:24,965 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 88 [2020-12-23 16:49:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:24,966 INFO L225 Difference]: With dead ends: 102 [2020-12-23 16:49:24,966 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 16:49:24,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=297, Invalid=2253, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 16:49:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 16:49:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2020-12-23 16:49:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 16:49:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-12-23 16:49:24,970 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 88 [2020-12-23 16:49:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:24,971 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-12-23 16:49:24,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 16:49:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-12-23 16:49:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 16:49:24,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:24,972 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:25,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 16:49:25,179 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1717557298, now seen corresponding path program 15 times [2020-12-23 16:49:25,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:25,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091113229] [2020-12-23 16:49:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:25,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091113229] [2020-12-23 16:49:25,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726348192] [2020-12-23 16:49:25,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:26,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-23 16:49:26,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:26,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-23 16:49:26,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:27,658 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:27,658 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:49:27,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:27,671 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:49:27,673 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:49:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:27,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:27,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 43 [2020-12-23 16:49:27,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189157201] [2020-12-23 16:49:27,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:49:27,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:27,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:49:27,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1690, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:49:27,752 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 43 states. [2020-12-23 16:49:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:30,541 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-12-23 16:49:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 16:49:30,542 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 95 [2020-12-23 16:49:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:30,543 INFO L225 Difference]: With dead ends: 155 [2020-12-23 16:49:30,543 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 16:49:30,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=265, Invalid=3895, Unknown=0, NotChecked=0, Total=4160 [2020-12-23 16:49:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 16:49:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2020-12-23 16:49:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-23 16:49:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2020-12-23 16:49:30,548 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 95 [2020-12-23 16:49:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:30,548 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2020-12-23 16:49:30,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:49:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2020-12-23 16:49:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-23 16:49:30,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:30,550 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:30,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 16:49:30,764 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1865404491, now seen corresponding path program 16 times [2020-12-23 16:49:30,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:30,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696856878] [2020-12-23 16:49:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 91 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:31,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696856878] [2020-12-23 16:49:31,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879495730] [2020-12-23 16:49:31,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:31,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:31,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:31,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 16:49:31,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 128 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:32,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:32,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2020-12-23 16:49:32,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607524199] [2020-12-23 16:49:32,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 16:49:32,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:32,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 16:49:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:49:32,322 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 39 states. [2020-12-23 16:49:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:34,305 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-12-23 16:49:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 16:49:34,306 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 99 [2020-12-23 16:49:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:34,307 INFO L225 Difference]: With dead ends: 113 [2020-12-23 16:49:34,307 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 16:49:34,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=356, Invalid=2836, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:49:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 16:49:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-12-23 16:49:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 16:49:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-12-23 16:49:34,310 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 99 [2020-12-23 16:49:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:34,310 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-12-23 16:49:34,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 16:49:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-12-23 16:49:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-23 16:49:34,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:34,311 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:34,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 16:49:34,512 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 141916645, now seen corresponding path program 17 times [2020-12-23 16:49:34,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:34,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796284607] [2020-12-23 16:49:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 41 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:35,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796284607] [2020-12-23 16:49:35,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662310646] [2020-12-23 16:49:35,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:37,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-23 16:49:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:37,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-23 16:49:37,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 41 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:38,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:38,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 47 [2020-12-23 16:49:38,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005918002] [2020-12-23 16:49:38,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-23 16:49:38,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-23 16:49:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 16:49:38,343 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 47 states. [2020-12-23 16:49:41,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:41,416 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-12-23 16:49:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 16:49:41,417 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 106 [2020-12-23 16:49:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:41,418 INFO L225 Difference]: With dead ends: 173 [2020-12-23 16:49:41,418 INFO L226 Difference]: Without dead ends: 114 [2020-12-23 16:49:41,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=295, Invalid=4675, Unknown=0, NotChecked=0, Total=4970 [2020-12-23 16:49:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-23 16:49:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-12-23 16:49:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 16:49:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-12-23 16:49:41,423 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2020-12-23 16:49:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:41,423 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-12-23 16:49:41,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-23 16:49:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-12-23 16:49:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 16:49:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:41,424 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:41,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:41,638 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1193304706, now seen corresponding path program 18 times [2020-12-23 16:49:41,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:41,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410815552] [2020-12-23 16:49:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 120 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:42,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410815552] [2020-12-23 16:49:42,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332130395] [2020-12-23 16:49:42,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:43,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-23 16:49:43,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:43,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 16:49:43,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:43,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-23 16:49:43,348 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:43,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:43,351 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:43,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:8, output treesize:7 [2020-12-23 16:49:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 162 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:44,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:44,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2020-12-23 16:49:44,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830191315] [2020-12-23 16:49:44,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-23 16:49:44,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-23 16:49:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1789, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 16:49:44,861 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 46 states. [2020-12-23 16:49:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:48,285 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2020-12-23 16:49:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:49:48,286 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2020-12-23 16:49:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:48,287 INFO L225 Difference]: With dead ends: 124 [2020-12-23 16:49:48,287 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 16:49:48,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=908, Invalid=4494, Unknown=0, NotChecked=0, Total=5402 [2020-12-23 16:49:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 16:49:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2020-12-23 16:49:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 16:49:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-12-23 16:49:48,292 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 110 [2020-12-23 16:49:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:48,293 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-12-23 16:49:48,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-23 16:49:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-12-23 16:49:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-23 16:49:48,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:48,294 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:48,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 16:49:48,501 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1036388744, now seen corresponding path program 19 times [2020-12-23 16:49:48,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:48,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670692137] [2020-12-23 16:49:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 46 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:49,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670692137] [2020-12-23 16:49:49,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107096306] [2020-12-23 16:49:49,371 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:49,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 77 conjunts are in the unsatisfiable core [2020-12-23 16:49:49,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:49,957 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:49,958 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:49,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:49,971 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:49,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:13 [2020-12-23 16:49:50,040 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,041 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,117 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,133 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,135 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,199 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,281 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,282 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,295 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,362 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,374 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,442 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,532 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,533 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,546 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,549 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,623 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:49:50,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,636 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,638 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:49:50,786 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:50,787 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:49:50,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:50,801 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:49:50,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:50,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:49:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 46 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:50,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:50,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 51 [2020-12-23 16:49:50,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275005034] [2020-12-23 16:49:50,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-23 16:49:50,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:50,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-23 16:49:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2412, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 16:49:50,900 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 51 states. [2020-12-23 16:49:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:55,294 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-12-23 16:49:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 16:49:55,295 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 117 [2020-12-23 16:49:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:55,297 INFO L225 Difference]: With dead ends: 191 [2020-12-23 16:49:55,297 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 16:49:55,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=311, Invalid=5541, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 16:49:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 16:49:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-12-23 16:49:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-23 16:49:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-12-23 16:49:55,305 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2020-12-23 16:49:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:55,305 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-12-23 16:49:55,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-23 16:49:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-12-23 16:49:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-23 16:49:55,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:55,306 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:55,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:49:55,518 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1260419515, now seen corresponding path program 20 times [2020-12-23 16:49:55,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:55,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690699821] [2020-12-23 16:49:55,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 153 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:56,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690699821] [2020-12-23 16:49:56,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979892926] [2020-12-23 16:49:56,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:56,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:56,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 16:49:56,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 200 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:57,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:57,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 46 [2020-12-23 16:49:57,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657179793] [2020-12-23 16:49:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-23 16:49:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-23 16:49:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 16:49:57,777 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 47 states. [2020-12-23 16:50:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:00,808 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-12-23 16:50:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 16:50:00,809 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 121 [2020-12-23 16:50:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:00,810 INFO L225 Difference]: With dead ends: 135 [2020-12-23 16:50:00,810 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 16:50:00,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=489, Invalid=4203, Unknown=0, NotChecked=0, Total=4692 [2020-12-23 16:50:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 16:50:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2020-12-23 16:50:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-23 16:50:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-12-23 16:50:00,816 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 121 [2020-12-23 16:50:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:00,816 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-12-23 16:50:00,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-23 16:50:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-12-23 16:50:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-23 16:50:00,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:00,817 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:01,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:01,031 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1704657633, now seen corresponding path program 21 times [2020-12-23 16:50:01,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:01,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032167583] [2020-12-23 16:50:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 51 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032167583] [2020-12-23 16:50:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215300151] [2020-12-23 16:50:02,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:05,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-23 16:50:05,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:05,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-23 16:50:05,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:07,075 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:07,076 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:50:07,077 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:50:07,090 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:50:07,092 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:07,092 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:50:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 51 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 55 [2020-12-23 16:50:07,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598487277] [2020-12-23 16:50:07,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-12-23 16:50:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:07,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-12-23 16:50:07,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2821, Unknown=0, NotChecked=0, Total=2970 [2020-12-23 16:50:07,199 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 55 states. [2020-12-23 16:50:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:12,075 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2020-12-23 16:50:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 16:50:12,076 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 128 [2020-12-23 16:50:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:12,077 INFO L225 Difference]: With dead ends: 209 [2020-12-23 16:50:12,078 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 16:50:12,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=334, Invalid=6472, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 16:50:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 16:50:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2020-12-23 16:50:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-23 16:50:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-12-23 16:50:12,082 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 128 [2020-12-23 16:50:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:12,083 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-12-23 16:50:12,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-12-23 16:50:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-12-23 16:50:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-23 16:50:12,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:12,084 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:12,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:12,291 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1864572420, now seen corresponding path program 22 times [2020-12-23 16:50:12,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:12,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679472915] [2020-12-23 16:50:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 190 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:13,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679472915] [2020-12-23 16:50:13,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563984906] [2020-12-23 16:50:13,244 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:13,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:50:13,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 64 conjunts are in the unsatisfiable core [2020-12-23 16:50:13,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 242 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:15,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:15,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 50 [2020-12-23 16:50:15,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343458420] [2020-12-23 16:50:15,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-23 16:50:15,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-23 16:50:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 16:50:15,010 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 51 states. [2020-12-23 16:50:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:18,495 INFO L93 Difference]: Finished difference Result 146 states and 147 transitions. [2020-12-23 16:50:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 16:50:18,496 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 132 [2020-12-23 16:50:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:18,497 INFO L225 Difference]: With dead ends: 146 [2020-12-23 16:50:18,497 INFO L226 Difference]: Without dead ends: 146 [2020-12-23 16:50:18,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=563, Invalid=4987, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 16:50:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-23 16:50:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2020-12-23 16:50:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-23 16:50:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2020-12-23 16:50:18,502 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 132 [2020-12-23 16:50:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:18,502 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2020-12-23 16:50:18,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-23 16:50:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2020-12-23 16:50:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 16:50:18,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:18,503 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:18,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-23 16:50:18,704 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:18,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2087716418, now seen corresponding path program 23 times [2020-12-23 16:50:18,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:18,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367241953] [2020-12-23 16:50:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 56 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:19,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367241953] [2020-12-23 16:50:19,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813796935] [2020-12-23 16:50:19,937 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:28,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-12-23 16:50:28,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:28,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-23 16:50:28,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:29,684 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:29,685 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:50:29,687 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:50:29,700 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:50:29,702 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:29,702 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:50:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 56 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:29,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:29,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 59 [2020-12-23 16:50:29,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870274495] [2020-12-23 16:50:29,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-23 16:50:29,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:29,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-23 16:50:29,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 16:50:29,815 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand 59 states. [2020-12-23 16:50:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:35,897 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-12-23 16:50:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 16:50:35,898 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 139 [2020-12-23 16:50:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:35,900 INFO L225 Difference]: With dead ends: 227 [2020-12-23 16:50:35,900 INFO L226 Difference]: Without dead ends: 147 [2020-12-23 16:50:35,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=357, Invalid=7475, Unknown=0, NotChecked=0, Total=7832 [2020-12-23 16:50:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-23 16:50:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2020-12-23 16:50:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-23 16:50:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2020-12-23 16:50:35,905 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 139 [2020-12-23 16:50:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:35,905 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2020-12-23 16:50:35,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-23 16:50:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2020-12-23 16:50:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 16:50:35,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:35,907 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:36,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:36,117 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2007148351, now seen corresponding path program 24 times [2020-12-23 16:50:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309390662] [2020-12-23 16:50:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 231 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:37,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309390662] [2020-12-23 16:50:37,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608680574] [2020-12-23 16:50:37,207 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:48,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-12-23 16:50:48,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 16:50:48,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 288 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:51,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:51,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2020-12-23 16:50:51,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223317248] [2020-12-23 16:50:51,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 16:50:51,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:51,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 16:50:51,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=2764, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:50:51,063 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 57 states. [2020-12-23 16:50:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:55,608 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-12-23 16:50:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 16:50:55,609 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 143 [2020-12-23 16:50:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:55,610 INFO L225 Difference]: With dead ends: 157 [2020-12-23 16:50:55,610 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 16:50:55,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1423, Invalid=7319, Unknown=0, NotChecked=0, Total=8742 [2020-12-23 16:50:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 16:50:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-12-23 16:50:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-23 16:50:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-12-23 16:50:55,615 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 143 [2020-12-23 16:50:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:55,615 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-12-23 16:50:55,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 16:50:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-12-23 16:50:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-23 16:50:55,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:55,616 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:55,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 16:50:55,817 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash -687453351, now seen corresponding path program 25 times [2020-12-23 16:50:55,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:55,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018043394] [2020-12-23 16:50:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 61 proven. 823 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:57,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018043394] [2020-12-23 16:50:57,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114672810] [2020-12-23 16:50:57,301 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 98 conjunts are in the unsatisfiable core [2020-12-23 16:50:57,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:58,303 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:13 [2020-12-23 16:50:58,398 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,415 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:58,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,522 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,522 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:58,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:58,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,743 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,743 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:58,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,834 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,850 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:58,945 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:58,947 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:58,962 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:58,962 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,053 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:59,057 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:59,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,185 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,186 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,293 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:59,294 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,311 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:59,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,419 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,533 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 16:50:59,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,551 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,554 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,554 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:15 [2020-12-23 16:50:59,742 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,742 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:50:59,744 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:50:59,761 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:50:59,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,764 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:50:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 61 proven. 823 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:59,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:59,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 63 [2020-12-23 16:50:59,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70928861] [2020-12-23 16:50:59,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-12-23 16:50:59,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-12-23 16:50:59,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3735, Unknown=0, NotChecked=0, Total=3906 [2020-12-23 16:50:59,972 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 63 states. [2020-12-23 16:51:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:08,147 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2020-12-23 16:51:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-23 16:51:08,148 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 150 [2020-12-23 16:51:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:08,149 INFO L225 Difference]: With dead ends: 245 [2020-12-23 16:51:08,149 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 16:51:08,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=380, Invalid=8550, Unknown=0, NotChecked=0, Total=8930 [2020-12-23 16:51:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 16:51:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2020-12-23 16:51:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 16:51:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-12-23 16:51:08,157 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 150 [2020-12-23 16:51:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:08,157 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-12-23 16:51:08,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-12-23 16:51:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-12-23 16:51:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 16:51:08,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:08,158 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:08,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:51:08,359 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1014203274, now seen corresponding path program 26 times [2020-12-23 16:51:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:08,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410121984] [2020-12-23 16:51:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 276 proven. 661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410121984] [2020-12-23 16:51:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274920634] [2020-12-23 16:51:09,546 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:51:09,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:51:09,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:09,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 74 conjunts are in the unsatisfiable core [2020-12-23 16:51:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 338 proven. 599 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:12,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:12,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 58 [2020-12-23 16:51:12,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709710193] [2020-12-23 16:51:12,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-23 16:51:12,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-23 16:51:12,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3123, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 16:51:12,130 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 59 states. [2020-12-23 16:51:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:16,861 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2020-12-23 16:51:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:51:16,863 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 154 [2020-12-23 16:51:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:16,865 INFO L225 Difference]: With dead ends: 168 [2020-12-23 16:51:16,865 INFO L226 Difference]: Without dead ends: 168 [2020-12-23 16:51:16,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=726, Invalid=6756, Unknown=0, NotChecked=0, Total=7482 [2020-12-23 16:51:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-23 16:51:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2020-12-23 16:51:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 16:51:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-12-23 16:51:16,870 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 154 [2020-12-23 16:51:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:16,870 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-12-23 16:51:16,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-23 16:51:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-12-23 16:51:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-23 16:51:16,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:16,871 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:17,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:51:17,085 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1269923324, now seen corresponding path program 27 times [2020-12-23 16:51:17,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:17,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819194598] [2020-12-23 16:51:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 66 proven. 963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:18,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819194598] [2020-12-23 16:51:18,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575208565] [2020-12-23 16:51:18,859 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:51:30,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-23 16:51:30,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:30,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 94 conjunts are in the unsatisfiable core [2020-12-23 16:51:30,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:32,733 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:32,733 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:51:32,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:51:32,753 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:51:32,755 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:32,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:51:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 66 proven. 963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:32,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:32,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 67 [2020-12-23 16:51:32,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501612557] [2020-12-23 16:51:32,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-12-23 16:51:32,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-12-23 16:51:32,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=4240, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 16:51:32,921 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 67 states. [2020-12-23 16:51:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:42,392 INFO L93 Difference]: Finished difference Result 263 states and 264 transitions. [2020-12-23 16:51:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-23 16:51:42,397 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 161 [2020-12-23 16:51:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:42,398 INFO L225 Difference]: With dead ends: 263 [2020-12-23 16:51:42,398 INFO L226 Difference]: Without dead ends: 169 [2020-12-23 16:51:42,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=403, Invalid=9697, Unknown=0, NotChecked=0, Total=10100 [2020-12-23 16:51:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-23 16:51:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2020-12-23 16:51:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-23 16:51:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-12-23 16:51:42,403 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 161 [2020-12-23 16:51:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:42,404 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-12-23 16:51:42,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-12-23 16:51:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-12-23 16:51:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-23 16:51:42,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:42,405 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:42,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:51:42,610 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:42,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1211142969, now seen corresponding path program 28 times [2020-12-23 16:51:42,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:42,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090822778] [2020-12-23 16:51:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 325 proven. 761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:44,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090822778] [2020-12-23 16:51:44,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559430758] [2020-12-23 16:51:44,120 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:51:44,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:51:44,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:44,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 79 conjunts are in the unsatisfiable core [2020-12-23 16:51:44,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 392 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:47,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:47,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 62 [2020-12-23 16:51:47,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079773148] [2020-12-23 16:51:47,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-12-23 16:51:47,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-12-23 16:51:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=3571, Unknown=0, NotChecked=0, Total=3906 [2020-12-23 16:51:47,476 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 63 states. [2020-12-23 16:51:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:55,222 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-12-23 16:51:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 16:51:55,225 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 165 [2020-12-23 16:51:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:55,226 INFO L225 Difference]: With dead ends: 179 [2020-12-23 16:51:55,226 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 16:51:55,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=815, Invalid=7741, Unknown=0, NotChecked=0, Total=8556 [2020-12-23 16:51:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 16:51:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2020-12-23 16:51:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 16:51:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2020-12-23 16:51:55,231 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 165 [2020-12-23 16:51:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:55,232 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2020-12-23 16:51:55,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-12-23 16:51:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2020-12-23 16:51:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-23 16:51:55,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:55,233 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:55,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 16:51:55,447 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash -904084333, now seen corresponding path program 29 times [2020-12-23 16:51:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:55,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968938765] [2020-12-23 16:51:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 71 proven. 1114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:57,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968938765] [2020-12-23 16:51:57,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394158332] [2020-12-23 16:51:57,710 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:52:21,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2020-12-23 16:52:21,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:52:21,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 98 conjunts are in the unsatisfiable core [2020-12-23 16:52:21,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:52:24,766 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:24,766 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:52:24,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:52:24,791 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 16:52:24,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:24,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2020-12-23 16:52:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 71 proven. 1114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:25,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:25,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 71 [2020-12-23 16:52:25,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153619456] [2020-12-23 16:52:25,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-12-23 16:52:25,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:25,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-12-23 16:52:25,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=4777, Unknown=0, NotChecked=0, Total=4970 [2020-12-23 16:52:25,051 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 71 states. [2020-12-23 16:52:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:52:37,048 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2020-12-23 16:52:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-23 16:52:37,050 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 172 [2020-12-23 16:52:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:52:37,052 INFO L225 Difference]: With dead ends: 281 [2020-12-23 16:52:37,052 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 16:52:37,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=426, Invalid=10916, Unknown=0, NotChecked=0, Total=11342 [2020-12-23 16:52:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 16:52:37,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2020-12-23 16:52:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 16:52:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2020-12-23 16:52:37,058 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 172 [2020-12-23 16:52:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:52:37,058 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2020-12-23 16:52:37,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-12-23 16:52:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2020-12-23 16:52:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-23 16:52:37,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:52:37,059 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:52:37,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 16:52:37,274 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:52:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:52:37,275 INFO L82 PathProgramCache]: Analyzing trace with hash -736718352, now seen corresponding path program 30 times [2020-12-23 16:52:37,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:52:37,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256833447] [2020-12-23 16:52:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:52:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:52:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 378 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:39,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256833447] [2020-12-23 16:52:39,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458805042] [2020-12-23 16:52:39,106 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 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