/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:07:28,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:07:28,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:07:28,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:07:28,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:07:28,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:07:28,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:07:28,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:07:28,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:07:28,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:07:28,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:07:28,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:07:28,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:07:28,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:07:28,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:07:28,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:07:28,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:07:28,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:07:28,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:07:28,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:07:28,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:07:28,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:07:28,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:07:28,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:07:28,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:07:28,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:07:28,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:07:28,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:07:28,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:07:28,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:07:28,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:07:28,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:07:28,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:07:28,588 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:07:28,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:07:28,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:07:28,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:07:28,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:07:28,590 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:07:28,590 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:07:28,590 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:07:28,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:07:28,591 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:07:28,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:07:28,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:07:28,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:07:28,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:07:28,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:07:28,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:07:28,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:07:28,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:07:28,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:07:28,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:07:28,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:07:28,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:07:28,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:07:28,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:07:28,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:07:29,000 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:07:29,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2021-01-07 05:07:29,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b4f06eb0/4321a847bf6a464693f1be05d677615b/FLAG106168299 [2021-01-07 05:07:29,772 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:07:29,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2021-01-07 05:07:29,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b4f06eb0/4321a847bf6a464693f1be05d677615b/FLAG106168299 [2021-01-07 05:07:30,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b4f06eb0/4321a847bf6a464693f1be05d677615b [2021-01-07 05:07:30,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:07:30,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:07:30,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:07:30,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:07:30,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:07:30,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22301f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30, skipping insertion in model container [2021-01-07 05:07:30,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:07:30,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:07:30,346 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i[817,830] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~src~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~dst~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-07 05:07:30,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:07:30,375 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:07:30,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i[817,830] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#src~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#src~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#dst~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#dst~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-07 05:07:30,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:07:30,416 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:07:30,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30 WrapperNode [2021-01-07 05:07:30,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:07:30,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:07:30,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:07:30,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:07:30,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:07:30,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:07:30,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:07:30,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:07:30,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... [2021-01-07 05:07:30,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:07:30,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:07:30,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:07:30,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:07:30,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:07:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:07:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:07:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:07:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:07:30,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:07:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:07:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:07:30,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:07:30,991 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:07:30,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:07:30 BoogieIcfgContainer [2021-01-07 05:07:30,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:07:31,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:07:31,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:07:31,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:07:31,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:07:30" (1/3) ... [2021-01-07 05:07:31,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b81844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:07:31, skipping insertion in model container [2021-01-07 05:07:31,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:07:30" (2/3) ... [2021-01-07 05:07:31,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b81844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:07:31, skipping insertion in model container [2021-01-07 05:07:31,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:07:30" (3/3) ... [2021-01-07 05:07:31,020 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-2.i [2021-01-07 05:07:31,038 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:07:31,050 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2021-01-07 05:07:31,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-01-07 05:07:31,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:07:31,160 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:07:31,162 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:07:31,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:07:31,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:07:31,162 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:07:31,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:07:31,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:07:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-07 05:07:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:07:31,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:31,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:07:31,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:31,217 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:07:31,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:31,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065342288] [2021-01-07 05:07:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:31,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065342288] [2021-01-07 05:07:31,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:07:31,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:07:31,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211067974] [2021-01-07 05:07:31,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:07:31,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:07:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:31,589 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2021-01-07 05:07:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:31,674 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-01-07 05:07:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:07:31,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:07:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:31,686 INFO L225 Difference]: With dead ends: 35 [2021-01-07 05:07:31,686 INFO L226 Difference]: Without dead ends: 33 [2021-01-07 05:07:31,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-07 05:07:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-07 05:07:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-07 05:07:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-07 05:07:31,727 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 4 [2021-01-07 05:07:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:31,728 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-07 05:07:31,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:07:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-07 05:07:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:07:31,729 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:31,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:07:31,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:07:31,730 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:07:31,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:31,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977489042] [2021-01-07 05:07:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:31,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977489042] [2021-01-07 05:07:31,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:07:31,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:07:31,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824793283] [2021-01-07 05:07:31,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:07:31,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:07:31,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:31,816 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2021-01-07 05:07:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:31,940 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-01-07 05:07:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:07:31,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:07:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:31,945 INFO L225 Difference]: With dead ends: 37 [2021-01-07 05:07:31,946 INFO L226 Difference]: Without dead ends: 37 [2021-01-07 05:07:31,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-07 05:07:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-01-07 05:07:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-07 05:07:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-07 05:07:31,959 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 4 [2021-01-07 05:07:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:31,960 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-07 05:07:31,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:07:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-07 05:07:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:07:31,962 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:31,962 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:31,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:07:31,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:07:31,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450845761] [2021-01-07 05:07:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:32,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450845761] [2021-01-07 05:07:32,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744255194] [2021-01-07 05:07:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:07:32,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:32,297 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:07:32,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:07:32,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:32,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:32,317 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:07:32,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2021-01-07 05:07:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:32,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:32,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:07:32,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248924324] [2021-01-07 05:07:32,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:07:32,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:32,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:07:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:07:32,351 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2021-01-07 05:07:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:32,421 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-01-07 05:07:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:07:32,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:07:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:32,423 INFO L225 Difference]: With dead ends: 41 [2021-01-07 05:07:32,423 INFO L226 Difference]: Without dead ends: 41 [2021-01-07 05:07:32,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:07:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-07 05:07:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-01-07 05:07:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:07:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-07 05:07:32,429 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2021-01-07 05:07:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:32,429 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-07 05:07:32,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:07:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-07 05:07:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:07:32,431 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:32,431 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2021-01-07 05:07:32,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:07:32,645 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash 276944844, now seen corresponding path program 2 times [2021-01-07 05:07:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973334773] [2021-01-07 05:07:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:32,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973334773] [2021-01-07 05:07:32,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981973278] [2021-01-07 05:07:32,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:32,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:32,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:07:32,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:32,823 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:07:32,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:07:32,825 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:32,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:32,852 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:07:32,853 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2021-01-07 05:07:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:32,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:07:32,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-01-07 05:07:32,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914261479] [2021-01-07 05:07:32,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:07:32,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:07:32,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:32,991 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2021-01-07 05:07:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:33,157 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2021-01-07 05:07:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:07:33,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:07:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:33,159 INFO L225 Difference]: With dead ends: 82 [2021-01-07 05:07:33,159 INFO L226 Difference]: Without dead ends: 82 [2021-01-07 05:07:33,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-07 05:07:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 45. [2021-01-07 05:07:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:07:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-01-07 05:07:33,167 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 12 [2021-01-07 05:07:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:33,168 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-01-07 05:07:33,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:07:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-01-07 05:07:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:07:33,169 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:33,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-01-07 05:07:33,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:33,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:33,386 INFO L82 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2021-01-07 05:07:33,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:33,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143199485] [2021-01-07 05:07:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143199485] [2021-01-07 05:07:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034833082] [2021-01-07 05:07:33,514 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 [2021-01-07 05:07:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:33,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:07:33,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:33,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:33,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-01-07 05:07:33,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129507262] [2021-01-07 05:07:33,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:07:33,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:33,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:07:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:07:33,603 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 8 states. [2021-01-07 05:07:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:33,791 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-01-07 05:07:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:07:33,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-01-07 05:07:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:33,794 INFO L225 Difference]: With dead ends: 115 [2021-01-07 05:07:33,794 INFO L226 Difference]: Without dead ends: 115 [2021-01-07 05:07:33,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:07:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-07 05:07:33,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 49. [2021-01-07 05:07:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:07:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-01-07 05:07:33,801 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 13 [2021-01-07 05:07:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:33,802 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-01-07 05:07:33,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:07:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-01-07 05:07:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:07:33,803 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:33,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:34,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:34,019 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:34,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059869, now seen corresponding path program 1 times [2021-01-07 05:07:34,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:34,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12710196] [2021-01-07 05:07:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:07:34,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12710196] [2021-01-07 05:07:34,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:07:34,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:07:34,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833621806] [2021-01-07 05:07:34,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:07:34,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:34,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:07:34,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:34,067 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2021-01-07 05:07:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:34,088 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-01-07 05:07:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:07:34,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:07:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:34,090 INFO L225 Difference]: With dead ends: 47 [2021-01-07 05:07:34,090 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:07:34,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:07:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:07:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-07 05:07:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:07:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-01-07 05:07:34,095 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2021-01-07 05:07:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:34,096 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-01-07 05:07:34,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:07:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-01-07 05:07:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:07:34,097 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:34,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:34,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:07:34,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059868, now seen corresponding path program 1 times [2021-01-07 05:07:34,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:34,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200595532] [2021-01-07 05:07:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:34,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200595532] [2021-01-07 05:07:34,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788415614] [2021-01-07 05:07:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:34,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:07:34,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:34,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:34,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:07:34,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962601792] [2021-01-07 05:07:34,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:07:34,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:34,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:07:34,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:07:34,264 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2021-01-07 05:07:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:34,397 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-01-07 05:07:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:07:34,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-07 05:07:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:34,399 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:07:34,399 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:07:34,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:07:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:07:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 51. [2021-01-07 05:07:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:07:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-01-07 05:07:34,406 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 20 [2021-01-07 05:07:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:34,406 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-01-07 05:07:34,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:07:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-01-07 05:07:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:07:34,407 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:34,407 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:34,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:34,621 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:34,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1143766311, now seen corresponding path program 2 times [2021-01-07 05:07:34,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:34,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522537496] [2021-01-07 05:07:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:34,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522537496] [2021-01-07 05:07:34,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028157270] [2021-01-07 05:07:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:34,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:07:34,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:34,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:07:34,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:34,766 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:07:34,766 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:07:34,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:34,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:34,777 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:07:34,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2021-01-07 05:07:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:07:34,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:07:34,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:07:34,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261795915] [2021-01-07 05:07:34,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:07:34,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:34,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:07:34,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:34,850 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 4 states. [2021-01-07 05:07:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:34,908 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-01-07 05:07:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:07:34,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-01-07 05:07:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:34,910 INFO L225 Difference]: With dead ends: 64 [2021-01-07 05:07:34,910 INFO L226 Difference]: Without dead ends: 64 [2021-01-07 05:07:34,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-07 05:07:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2021-01-07 05:07:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:07:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-01-07 05:07:34,915 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2021-01-07 05:07:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:34,916 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-01-07 05:07:34,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:07:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-01-07 05:07:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:07:34,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:34,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:35,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:35,131 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:35,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1096967758, now seen corresponding path program 1 times [2021-01-07 05:07:35,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:35,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769591539] [2021-01-07 05:07:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:07:35,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769591539] [2021-01-07 05:07:35,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:07:35,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:07:35,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188141678] [2021-01-07 05:07:35,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:07:35,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:35,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:07:35,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:07:35,191 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 4 states. [2021-01-07 05:07:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:35,229 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-01-07 05:07:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:07:35,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-01-07 05:07:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:35,231 INFO L225 Difference]: With dead ends: 56 [2021-01-07 05:07:35,231 INFO L226 Difference]: Without dead ends: 56 [2021-01-07 05:07:35,231 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 [2021-01-07 05:07:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-07 05:07:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-01-07 05:07:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:07:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-01-07 05:07:35,236 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 25 [2021-01-07 05:07:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:35,236 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-01-07 05:07:35,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:07:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-01-07 05:07:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:07:35,237 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:35,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:35,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:07:35,238 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:35,238 INFO L82 PathProgramCache]: Analyzing trace with hash -352203591, now seen corresponding path program 1 times [2021-01-07 05:07:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491040929] [2021-01-07 05:07:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491040929] [2021-01-07 05:07:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786355144] [2021-01-07 05:07:35,299 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 [2021-01-07 05:07:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:35,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:07:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:35,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:35,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:07:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202645360] [2021-01-07 05:07:35,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:07:35,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:07:35,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:07:35,419 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 8 states. [2021-01-07 05:07:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:35,538 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2021-01-07 05:07:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:07:35,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2021-01-07 05:07:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:35,540 INFO L225 Difference]: With dead ends: 148 [2021-01-07 05:07:35,541 INFO L226 Difference]: Without dead ends: 148 [2021-01-07 05:07:35,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:07:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-07 05:07:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 57. [2021-01-07 05:07:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:07:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-01-07 05:07:35,546 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 26 [2021-01-07 05:07:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:35,547 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-01-07 05:07:35,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:07:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-01-07 05:07:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:07:35,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:35,549 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:35,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:35,763 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:35,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1281757436, now seen corresponding path program 2 times [2021-01-07 05:07:35,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:35,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397084485] [2021-01-07 05:07:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:35,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397084485] [2021-01-07 05:07:35,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509862528] [2021-01-07 05:07:35,855 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 [2021-01-07 05:07:35,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:35,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:07:35,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:35,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:35,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:07:35,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719803571] [2021-01-07 05:07:35,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:07:35,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:07:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:35,965 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 9 states. [2021-01-07 05:07:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:36,099 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2021-01-07 05:07:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:07:36,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-01-07 05:07:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:36,101 INFO L225 Difference]: With dead ends: 174 [2021-01-07 05:07:36,101 INFO L226 Difference]: Without dead ends: 174 [2021-01-07 05:07:36,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:07:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-01-07 05:07:36,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 61. [2021-01-07 05:07:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:07:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-01-07 05:07:36,107 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 30 [2021-01-07 05:07:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:36,107 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-01-07 05:07:36,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:07:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-01-07 05:07:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:07:36,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:36,108 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:36,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:36,323 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 3 times [2021-01-07 05:07:36,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:36,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070694848] [2021-01-07 05:07:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:36,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070694848] [2021-01-07 05:07:36,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546976909] [2021-01-07 05:07:36,480 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 [2021-01-07 05:07:36,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:07:36,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:36,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:07:36,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-01-07 05:07:36,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:36,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-01-07 05:07:36,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773944976] [2021-01-07 05:07:36,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:07:36,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:36,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:07:36,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:07:36,746 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 15 states. [2021-01-07 05:07:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:37,297 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2021-01-07 05:07:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:07:37,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2021-01-07 05:07:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:37,301 INFO L225 Difference]: With dead ends: 197 [2021-01-07 05:07:37,301 INFO L226 Difference]: Without dead ends: 197 [2021-01-07 05:07:37,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:07:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-07 05:07:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 62. [2021-01-07 05:07:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:07:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-01-07 05:07:37,315 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 34 [2021-01-07 05:07:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:37,315 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-01-07 05:07:37,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:07:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-01-07 05:07:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:07:37,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:37,322 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:37,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:07:37,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:37,529 INFO L82 PathProgramCache]: Analyzing trace with hash -697671951, now seen corresponding path program 1 times [2021-01-07 05:07:37,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:37,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841285570] [2021-01-07 05:07:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:37,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841285570] [2021-01-07 05:07:37,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305250063] [2021-01-07 05:07:37,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:37,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:07:37,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:37,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:37,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-07 05:07:37,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114309136] [2021-01-07 05:07:37,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:07:37,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:37,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:07:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:07:37,767 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 11 states. [2021-01-07 05:07:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:37,951 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2021-01-07 05:07:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:07:37,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2021-01-07 05:07:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:37,953 INFO L225 Difference]: With dead ends: 224 [2021-01-07 05:07:37,954 INFO L226 Difference]: Without dead ends: 224 [2021-01-07 05:07:37,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:07:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-01-07 05:07:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 66. [2021-01-07 05:07:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:07:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-01-07 05:07:37,959 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 38 [2021-01-07 05:07:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:37,960 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-01-07 05:07:37,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:07:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-01-07 05:07:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-07 05:07:37,961 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:37,961 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:38,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:38,176 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2077447860, now seen corresponding path program 2 times [2021-01-07 05:07:38,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:38,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305225335] [2021-01-07 05:07:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:38,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305225335] [2021-01-07 05:07:38,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976979246] [2021-01-07 05:07:38,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:38,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:07:38,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:38,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:07:38,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:07:38,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:07:38,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-01-07 05:07:38,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128146669] [2021-01-07 05:07:38,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:07:38,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:07:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:07:38,478 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 4 states. [2021-01-07 05:07:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:38,524 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-01-07 05:07:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:07:38,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2021-01-07 05:07:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:38,526 INFO L225 Difference]: With dead ends: 65 [2021-01-07 05:07:38,526 INFO L226 Difference]: Without dead ends: 61 [2021-01-07 05:07:38,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:07:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-07 05:07:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-01-07 05:07:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:07:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-01-07 05:07:38,530 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 42 [2021-01-07 05:07:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:38,530 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-01-07 05:07:38,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:07:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-01-07 05:07:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:07:38,531 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:38,531 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:38,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:38,745 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1564990626, now seen corresponding path program 1 times [2021-01-07 05:07:38,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:38,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442044099] [2021-01-07 05:07:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:38,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442044099] [2021-01-07 05:07:38,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753729200] [2021-01-07 05:07:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:38,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:07:38,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:39,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:39,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-07 05:07:39,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893137176] [2021-01-07 05:07:39,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:07:39,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:39,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:07:39,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:07:39,030 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 12 states. [2021-01-07 05:07:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:39,193 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2021-01-07 05:07:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:07:39,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-07 05:07:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:39,195 INFO L225 Difference]: With dead ends: 218 [2021-01-07 05:07:39,195 INFO L226 Difference]: Without dead ends: 218 [2021-01-07 05:07:39,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:07:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-01-07 05:07:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 65. [2021-01-07 05:07:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:07:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-01-07 05:07:39,199 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2021-01-07 05:07:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-01-07 05:07:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:07:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-01-07 05:07:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:07:39,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:39,201 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:39,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:07:39,416 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1246743681, now seen corresponding path program 2 times [2021-01-07 05:07:39,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:39,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101315193] [2021-01-07 05:07:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:39,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101315193] [2021-01-07 05:07:39,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56510962] [2021-01-07 05:07:39,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:39,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:07:39,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:39,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:07:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:39,638 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:07:39,638 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:07:39,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:39,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:39,648 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:39,649 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2021-01-07 05:07:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-01-07 05:07:39,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:39,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3] total 14 [2021-01-07 05:07:39,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861587948] [2021-01-07 05:07:39,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:07:39,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:39,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:07:39,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:07:39,787 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 14 states. [2021-01-07 05:07:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:40,533 INFO L93 Difference]: Finished difference Result 226 states and 237 transitions. [2021-01-07 05:07:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:07:40,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2021-01-07 05:07:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:40,535 INFO L225 Difference]: With dead ends: 226 [2021-01-07 05:07:40,535 INFO L226 Difference]: Without dead ends: 226 [2021-01-07 05:07:40,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:07:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-07 05:07:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 117. [2021-01-07 05:07:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-07 05:07:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-01-07 05:07:40,542 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 49 [2021-01-07 05:07:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:40,542 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-01-07 05:07:40,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:07:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-01-07 05:07:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:07:40,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:40,544 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:40,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:07:40,755 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:40,756 INFO L82 PathProgramCache]: Analyzing trace with hash 248575996, now seen corresponding path program 1 times [2021-01-07 05:07:40,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:40,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27180760] [2021-01-07 05:07:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-01-07 05:07:40,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27180760] [2021-01-07 05:07:40,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161240095] [2021-01-07 05:07:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:07:40,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:41,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:41,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14] total 19 [2021-01-07 05:07:41,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096789611] [2021-01-07 05:07:41,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:07:41,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:41,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:07:41,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:07:41,188 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 19 states. [2021-01-07 05:07:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:42,016 INFO L93 Difference]: Finished difference Result 386 states and 399 transitions. [2021-01-07 05:07:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:07:42,017 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2021-01-07 05:07:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:42,019 INFO L225 Difference]: With dead ends: 386 [2021-01-07 05:07:42,019 INFO L226 Difference]: Without dead ends: 386 [2021-01-07 05:07:42,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=550, Invalid=1090, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:07:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-01-07 05:07:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 123. [2021-01-07 05:07:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-01-07 05:07:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-01-07 05:07:42,027 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 58 [2021-01-07 05:07:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:42,028 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-01-07 05:07:42,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:07:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-01-07 05:07:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:07:42,029 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:42,029 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:42,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-07 05:07:42,241 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1781360740, now seen corresponding path program 1 times [2021-01-07 05:07:42,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:42,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530155257] [2021-01-07 05:07:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-01-07 05:07:42,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530155257] [2021-01-07 05:07:42,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488695176] [2021-01-07 05:07:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:42,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:07:42,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:42,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:42,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 19 [2021-01-07 05:07:42,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121033541] [2021-01-07 05:07:42,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:07:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:07:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=200, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:07:42,722 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 19 states. [2021-01-07 05:07:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:43,671 INFO L93 Difference]: Finished difference Result 405 states and 419 transitions. [2021-01-07 05:07:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-07 05:07:43,672 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2021-01-07 05:07:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:43,675 INFO L225 Difference]: With dead ends: 405 [2021-01-07 05:07:43,675 INFO L226 Difference]: Without dead ends: 405 [2021-01-07 05:07:43,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=604, Invalid=1202, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:07:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-01-07 05:07:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 128. [2021-01-07 05:07:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-01-07 05:07:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-01-07 05:07:43,682 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 63 [2021-01-07 05:07:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:43,682 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-01-07 05:07:43,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:07:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-01-07 05:07:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-07 05:07:43,684 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:43,684 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:43,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:43,898 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1936428859, now seen corresponding path program 1 times [2021-01-07 05:07:43,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:43,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180024731] [2021-01-07 05:07:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:44,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180024731] [2021-01-07 05:07:44,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122024576] [2021-01-07 05:07:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:44,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:07:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:44,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:44,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-07 05:07:44,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481124806] [2021-01-07 05:07:44,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:07:44,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:07:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:07:44,308 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 17 states. [2021-01-07 05:07:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:44,559 INFO L93 Difference]: Finished difference Result 352 states and 367 transitions. [2021-01-07 05:07:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:07:44,560 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2021-01-07 05:07:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:44,561 INFO L225 Difference]: With dead ends: 352 [2021-01-07 05:07:44,562 INFO L226 Difference]: Without dead ends: 352 [2021-01-07 05:07:44,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:07:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-01-07 05:07:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 132. [2021-01-07 05:07:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-07 05:07:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2021-01-07 05:07:44,567 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 70 [2021-01-07 05:07:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:44,568 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2021-01-07 05:07:44,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:07:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2021-01-07 05:07:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:07:44,569 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:44,569 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:44,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:44,779 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1816814456, now seen corresponding path program 2 times [2021-01-07 05:07:44,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:44,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881665357] [2021-01-07 05:07:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:45,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881665357] [2021-01-07 05:07:45,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030396555] [2021-01-07 05:07:45,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:45,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:45,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:07:45,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:45,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:45,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-07 05:07:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568444327] [2021-01-07 05:07:45,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:07:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:07:45,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:07:45,179 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand 18 states. [2021-01-07 05:07:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:45,428 INFO L93 Difference]: Finished difference Result 377 states and 393 transitions. [2021-01-07 05:07:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:07:45,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2021-01-07 05:07:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:45,430 INFO L225 Difference]: With dead ends: 377 [2021-01-07 05:07:45,431 INFO L226 Difference]: Without dead ends: 377 [2021-01-07 05:07:45,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:07:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-01-07 05:07:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 136. [2021-01-07 05:07:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-01-07 05:07:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2021-01-07 05:07:45,437 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 74 [2021-01-07 05:07:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2021-01-07 05:07:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:07:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2021-01-07 05:07:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-07 05:07:45,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:45,438 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:45,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:45,652 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:45,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1962594613, now seen corresponding path program 3 times [2021-01-07 05:07:45,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:45,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74757483] [2021-01-07 05:07:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:07:45,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74757483] [2021-01-07 05:07:45,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988031720] [2021-01-07 05:07:45,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:45,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:07:45,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:07:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:46,094 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:07:46,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-01-07 05:07:46,095 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,102 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:46,106 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 05:07:46,216 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:46,216 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-01-07 05:07:46,219 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,221 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:46,222 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2021-01-07 05:07:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-01-07 05:07:46,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:46,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2021-01-07 05:07:46,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290281569] [2021-01-07 05:07:46,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:07:46,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:46,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:07:46,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:07:46,280 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 26 states. [2021-01-07 05:07:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:47,380 INFO L93 Difference]: Finished difference Result 412 states and 429 transitions. [2021-01-07 05:07:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:07:47,381 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2021-01-07 05:07:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:47,383 INFO L225 Difference]: With dead ends: 412 [2021-01-07 05:07:47,383 INFO L226 Difference]: Without dead ends: 412 [2021-01-07 05:07:47,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=812, Invalid=1540, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:07:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-01-07 05:07:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 146. [2021-01-07 05:07:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 05:07:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2021-01-07 05:07:47,391 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 78 [2021-01-07 05:07:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:47,392 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2021-01-07 05:07:47,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:07:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2021-01-07 05:07:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-07 05:07:47,393 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:47,393 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:47,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-07 05:07:47,607 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:47,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1916727749, now seen corresponding path program 1 times [2021-01-07 05:07:47,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:47,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576203231] [2021-01-07 05:07:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:47,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576203231] [2021-01-07 05:07:47,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950304574] [2021-01-07 05:07:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:47,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:07:47,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:48,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:48,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-07 05:07:48,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652443515] [2021-01-07 05:07:48,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:07:48,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:07:48,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:48,078 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand 20 states. [2021-01-07 05:07:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:48,398 INFO L93 Difference]: Finished difference Result 429 states and 447 transitions. [2021-01-07 05:07:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:07:48,400 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 85 [2021-01-07 05:07:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:48,403 INFO L225 Difference]: With dead ends: 429 [2021-01-07 05:07:48,403 INFO L226 Difference]: Without dead ends: 429 [2021-01-07 05:07:48,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-01-07 05:07:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 150. [2021-01-07 05:07:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-01-07 05:07:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2021-01-07 05:07:48,410 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 85 [2021-01-07 05:07:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:48,411 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2021-01-07 05:07:48,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:07:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2021-01-07 05:07:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-01-07 05:07:48,412 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:48,412 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:48,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:07:48,628 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:48,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:48,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1830779880, now seen corresponding path program 2 times [2021-01-07 05:07:48,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:48,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090267896] [2021-01-07 05:07:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:48,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090267896] [2021-01-07 05:07:48,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432919372] [2021-01-07 05:07:48,938 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 [2021-01-07 05:07:49,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:49,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:07:49,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:49,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:49,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-07 05:07:49,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797618076] [2021-01-07 05:07:49,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:07:49,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:07:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:07:49,149 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 21 states. [2021-01-07 05:07:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:49,469 INFO L93 Difference]: Finished difference Result 454 states and 473 transitions. [2021-01-07 05:07:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:07:49,470 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 89 [2021-01-07 05:07:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:49,473 INFO L225 Difference]: With dead ends: 454 [2021-01-07 05:07:49,474 INFO L226 Difference]: Without dead ends: 454 [2021-01-07 05:07:49,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:07:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-01-07 05:07:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 154. [2021-01-07 05:07:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-07 05:07:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2021-01-07 05:07:49,481 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 89 [2021-01-07 05:07:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:49,481 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2021-01-07 05:07:49,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:07:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2021-01-07 05:07:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-01-07 05:07:49,482 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:49,483 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:49,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:07:49,696 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1835516789, now seen corresponding path program 3 times [2021-01-07 05:07:49,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:49,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768958040] [2021-01-07 05:07:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:07:50,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768958040] [2021-01-07 05:07:50,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174096602] [2021-01-07 05:07:50,028 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 [2021-01-07 05:07:50,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:07:50,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:50,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:07:50,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-01-07 05:07:50,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:50,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 24 [2021-01-07 05:07:50,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077817766] [2021-01-07 05:07:50,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:07:50,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:07:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:07:50,194 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 24 states. [2021-01-07 05:07:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:50,568 INFO L93 Difference]: Finished difference Result 471 states and 490 transitions. [2021-01-07 05:07:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:07:50,569 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2021-01-07 05:07:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:50,572 INFO L225 Difference]: With dead ends: 471 [2021-01-07 05:07:50,572 INFO L226 Difference]: Without dead ends: 462 [2021-01-07 05:07:50,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=280, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:07:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-01-07 05:07:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 152. [2021-01-07 05:07:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-07 05:07:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-01-07 05:07:50,579 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 93 [2021-01-07 05:07:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:50,580 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-01-07 05:07:50,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:07:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-01-07 05:07:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-07 05:07:50,581 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:50,581 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:50,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:07:50,794 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash -5947292, now seen corresponding path program 4 times [2021-01-07 05:07:50,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:50,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224319600] [2021-01-07 05:07:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:07:51,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224319600] [2021-01-07 05:07:51,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836523224] [2021-01-07 05:07:51,138 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 [2021-01-07 05:07:51,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:07:51,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:51,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:07:51,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:07:51,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:51,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-07 05:07:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205082167] [2021-01-07 05:07:51,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:07:51,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:07:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:07:51,726 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 23 states. [2021-01-07 05:07:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:52,088 INFO L93 Difference]: Finished difference Result 487 states and 507 transitions. [2021-01-07 05:07:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:07:52,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2021-01-07 05:07:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:52,091 INFO L225 Difference]: With dead ends: 487 [2021-01-07 05:07:52,091 INFO L226 Difference]: Without dead ends: 487 [2021-01-07 05:07:52,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:07:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-01-07 05:07:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 156. [2021-01-07 05:07:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-01-07 05:07:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-01-07 05:07:52,098 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 99 [2021-01-07 05:07:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:52,099 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-01-07 05:07:52,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:07:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-01-07 05:07:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-01-07 05:07:52,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:52,100 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:52,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:07:52,315 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -58806399, now seen corresponding path program 5 times [2021-01-07 05:07:52,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:52,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400823998] [2021-01-07 05:07:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:07:52,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400823998] [2021-01-07 05:07:52,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660726910] [2021-01-07 05:07:52,700 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 [2021-01-07 05:07:53,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-01-07 05:07:53,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:53,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-07 05:07:53,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:07:53,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:53,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-07 05:07:53,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375102412] [2021-01-07 05:07:53,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:07:53,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:53,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:07:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:07:53,646 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 24 states. [2021-01-07 05:07:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:54,055 INFO L93 Difference]: Finished difference Result 512 states and 533 transitions. [2021-01-07 05:07:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:07:54,056 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2021-01-07 05:07:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:54,059 INFO L225 Difference]: With dead ends: 512 [2021-01-07 05:07:54,059 INFO L226 Difference]: Without dead ends: 512 [2021-01-07 05:07:54,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:07:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-01-07 05:07:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 160. [2021-01-07 05:07:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-01-07 05:07:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2021-01-07 05:07:54,066 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 103 [2021-01-07 05:07:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:54,067 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2021-01-07 05:07:54,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:07:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2021-01-07 05:07:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 05:07:54,068 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:54,068 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:54,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:54,283 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:54,284 INFO L82 PathProgramCache]: Analyzing trace with hash 44124190, now seen corresponding path program 6 times [2021-01-07 05:07:54,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:54,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343755769] [2021-01-07 05:07:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:07:54,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343755769] [2021-01-07 05:07:54,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894390353] [2021-01-07 05:07:54,674 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 [2021-01-07 05:07:54,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:07:54,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:54,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:07:54,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:54,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:07:54,934 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-01-07 05:07:54,935 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-01-07 05:07:54,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:54,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:54,946 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:54,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2021-01-07 05:07:55,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:07:55,016 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,016 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 37 [2021-01-07 05:07:55,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,030 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:18 [2021-01-07 05:07:55,149 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,150 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-01-07 05:07:55,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,153 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2021-01-07 05:07:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-01-07 05:07:55,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:55,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 34 [2021-01-07 05:07:55,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767147607] [2021-01-07 05:07:55,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:07:55,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:55,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:07:55,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=749, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:07:55,239 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand 34 states. [2021-01-07 05:08:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:04,477 INFO L93 Difference]: Finished difference Result 747 states and 769 transitions. [2021-01-07 05:08:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-01-07 05:08:04,478 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2021-01-07 05:08:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:04,481 INFO L225 Difference]: With dead ends: 747 [2021-01-07 05:08:04,481 INFO L226 Difference]: Without dead ends: 747 [2021-01-07 05:08:04,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17136 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=10020, Invalid=30986, Unknown=0, NotChecked=0, Total=41006 [2021-01-07 05:08:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-01-07 05:08:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 166. [2021-01-07 05:08:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-01-07 05:08:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-01-07 05:08:04,500 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 107 [2021-01-07 05:08:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:04,501 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-01-07 05:08:04,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:08:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-01-07 05:08:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-01-07 05:08:04,502 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:04,502 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:04,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:08:04,717 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:04,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1507061650, now seen corresponding path program 4 times [2021-01-07 05:08:04,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:04,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078713698] [2021-01-07 05:08:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-07 05:08:05,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078713698] [2021-01-07 05:08:05,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434956614] [2021-01-07 05:08:05,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:05,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:05,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:05,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:08:05,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2021-01-07 05:08:05,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:05,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2021-01-07 05:08:05,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734622663] [2021-01-07 05:08:05,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:08:05,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:08:05,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=535, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:08:05,485 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 30 states. [2021-01-07 05:08:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:09,162 INFO L93 Difference]: Finished difference Result 870 states and 893 transitions. [2021-01-07 05:08:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-01-07 05:08:09,163 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2021-01-07 05:08:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:09,167 INFO L225 Difference]: With dead ends: 870 [2021-01-07 05:08:09,167 INFO L226 Difference]: Without dead ends: 870 [2021-01-07 05:08:09,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2610, Invalid=6896, Unknown=0, NotChecked=0, Total=9506 [2021-01-07 05:08:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-01-07 05:08:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 174. [2021-01-07 05:08:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-01-07 05:08:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 184 transitions. [2021-01-07 05:08:09,180 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 184 transitions. Word has length 114 [2021-01-07 05:08:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:09,180 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 184 transitions. [2021-01-07 05:08:09,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:08:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 184 transitions. [2021-01-07 05:08:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-01-07 05:08:09,181 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:09,182 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:09,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:09,394 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:09,395 INFO L82 PathProgramCache]: Analyzing trace with hash 347050602, now seen corresponding path program 1 times [2021-01-07 05:08:09,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:09,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389370147] [2021-01-07 05:08:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:08:09,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389370147] [2021-01-07 05:08:09,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315052163] [2021-01-07 05:08:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:08:09,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:08:10,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:10,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-01-07 05:08:10,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118756484] [2021-01-07 05:08:10,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:08:10,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:08:10,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:08:10,119 INFO L87 Difference]: Start difference. First operand 174 states and 184 transitions. Second operand 27 states. [2021-01-07 05:08:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:10,602 INFO L93 Difference]: Finished difference Result 725 states and 749 transitions. [2021-01-07 05:08:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:08:10,603 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 119 [2021-01-07 05:08:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:10,606 INFO L225 Difference]: With dead ends: 725 [2021-01-07 05:08:10,607 INFO L226 Difference]: Without dead ends: 725 [2021-01-07 05:08:10,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:08:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-01-07 05:08:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 178. [2021-01-07 05:08:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-01-07 05:08:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2021-01-07 05:08:10,617 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 119 [2021-01-07 05:08:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:10,618 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2021-01-07 05:08:10,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:08:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2021-01-07 05:08:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-01-07 05:08:10,619 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:10,620 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:10,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:08:10,833 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash -355512057, now seen corresponding path program 2 times [2021-01-07 05:08:10,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:10,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372729950] [2021-01-07 05:08:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:08:11,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372729950] [2021-01-07 05:08:11,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55228962] [2021-01-07 05:08:11,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:11,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:11,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:11,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-01-07 05:08:11,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:11,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5] total 31 [2021-01-07 05:08:11,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129364148] [2021-01-07 05:08:11,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:08:11,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:11,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:08:11,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:08:11,722 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 31 states. [2021-01-07 05:08:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:16,418 INFO L93 Difference]: Finished difference Result 732 states and 757 transitions. [2021-01-07 05:08:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-01-07 05:08:16,419 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 123 [2021-01-07 05:08:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:16,422 INFO L225 Difference]: With dead ends: 732 [2021-01-07 05:08:16,422 INFO L226 Difference]: Without dead ends: 732 [2021-01-07 05:08:16,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4883, Invalid=11629, Unknown=0, NotChecked=0, Total=16512 [2021-01-07 05:08:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-01-07 05:08:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 181. [2021-01-07 05:08:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-01-07 05:08:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2021-01-07 05:08:16,430 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 123 [2021-01-07 05:08:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:16,431 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2021-01-07 05:08:16,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:08:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2021-01-07 05:08:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-01-07 05:08:16,432 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:16,432 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:16,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:16,648 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1056097030, now seen corresponding path program 1 times [2021-01-07 05:08:16,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:16,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756593499] [2021-01-07 05:08:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-07 05:08:17,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756593499] [2021-01-07 05:08:17,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961602615] [2021-01-07 05:08:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:17,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:08:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-07 05:08:17,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:17,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-01-07 05:08:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117547393] [2021-01-07 05:08:17,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:08:17,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:17,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:08:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:08:17,453 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand 29 states. [2021-01-07 05:08:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:17,971 INFO L93 Difference]: Finished difference Result 762 states and 788 transitions. [2021-01-07 05:08:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:08:17,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2021-01-07 05:08:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:17,975 INFO L225 Difference]: With dead ends: 762 [2021-01-07 05:08:17,975 INFO L226 Difference]: Without dead ends: 762 [2021-01-07 05:08:17,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:08:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-01-07 05:08:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 185. [2021-01-07 05:08:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-07 05:08:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2021-01-07 05:08:17,982 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 130 [2021-01-07 05:08:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:17,982 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2021-01-07 05:08:17,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:08:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2021-01-07 05:08:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-01-07 05:08:17,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:17,984 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:18,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-07 05:08:18,196 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1036178883, now seen corresponding path program 2 times [2021-01-07 05:08:18,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:18,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484523548] [2021-01-07 05:08:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-07 05:08:18,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484523548] [2021-01-07 05:08:18,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537813023] [2021-01-07 05:08:18,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:18,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:18,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:08:18,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-07 05:08:19,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:19,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-01-07 05:08:19,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138906933] [2021-01-07 05:08:19,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:08:19,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:19,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:08:19,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:08:19,100 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand 30 states. [2021-01-07 05:08:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:19,634 INFO L93 Difference]: Finished difference Result 792 states and 819 transitions. [2021-01-07 05:08:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-07 05:08:19,635 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2021-01-07 05:08:19,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:19,638 INFO L225 Difference]: With dead ends: 792 [2021-01-07 05:08:19,638 INFO L226 Difference]: Without dead ends: 792 [2021-01-07 05:08:19,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:08:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-01-07 05:08:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 189. [2021-01-07 05:08:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-01-07 05:08:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2021-01-07 05:08:19,646 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 134 [2021-01-07 05:08:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:19,646 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2021-01-07 05:08:19,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:08:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2021-01-07 05:08:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-01-07 05:08:19,647 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:19,647 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:19,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:19,862 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1554072064, now seen corresponding path program 3 times [2021-01-07 05:08:19,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:19,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428686534] [2021-01-07 05:08:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-07 05:08:20,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428686534] [2021-01-07 05:08:20,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126217644] [2021-01-07 05:08:20,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:20,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:08:20,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:20,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:08:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:20,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:20,815 INFO L348 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-01-07 05:08:20,816 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-01-07 05:08:20,818 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:20,830 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:20,831 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:20,831 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2021-01-07 05:08:21,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:21,280 INFO L348 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2021-01-07 05:08:21,281 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 24 [2021-01-07 05:08:21,283 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:21,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:21,293 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:21,294 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2021-01-07 05:08:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-01-07 05:08:21,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:21,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15] total 43 [2021-01-07 05:08:21,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970360906] [2021-01-07 05:08:21,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:08:21,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:21,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:08:21,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=1115, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:08:21,443 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 43 states. [2021-01-07 05:08:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:24,092 INFO L93 Difference]: Finished difference Result 820 states and 848 transitions. [2021-01-07 05:08:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-07 05:08:24,093 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 138 [2021-01-07 05:08:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:24,097 INFO L225 Difference]: With dead ends: 820 [2021-01-07 05:08:24,097 INFO L226 Difference]: Without dead ends: 820 [2021-01-07 05:08:24,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2336, Invalid=3984, Unknown=0, NotChecked=0, Total=6320 [2021-01-07 05:08:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-01-07 05:08:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 210. [2021-01-07 05:08:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-07 05:08:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 221 transitions. [2021-01-07 05:08:24,106 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 221 transitions. Word has length 138 [2021-01-07 05:08:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:24,106 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 221 transitions. [2021-01-07 05:08:24,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:08:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 221 transitions. [2021-01-07 05:08:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-01-07 05:08:24,107 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:24,108 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:24,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:08:24,321 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1013807770, now seen corresponding path program 5 times [2021-01-07 05:08:24,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:24,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436175923] [2021-01-07 05:08:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-07 05:08:25,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436175923] [2021-01-07 05:08:25,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286095411] [2021-01-07 05:08:25,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:25,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-01-07 05:08:25,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:25,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:08:25,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-07 05:08:26,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:26,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-01-07 05:08:26,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536190304] [2021-01-07 05:08:26,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:08:26,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:08:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:08:26,166 INFO L87 Difference]: Start difference. First operand 210 states and 221 transitions. Second operand 32 states. [2021-01-07 05:08:26,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:26,792 INFO L93 Difference]: Finished difference Result 850 states and 879 transitions. [2021-01-07 05:08:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:08:26,792 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 145 [2021-01-07 05:08:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:26,795 INFO L225 Difference]: With dead ends: 850 [2021-01-07 05:08:26,795 INFO L226 Difference]: Without dead ends: 850 [2021-01-07 05:08:26,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:08:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-01-07 05:08:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 214. [2021-01-07 05:08:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-07 05:08:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 225 transitions. [2021-01-07 05:08:26,801 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 225 transitions. Word has length 145 [2021-01-07 05:08:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:26,802 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 225 transitions. [2021-01-07 05:08:26,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:08:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 225 transitions. [2021-01-07 05:08:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-01-07 05:08:26,803 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:26,803 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:27,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:27,017 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1914177987, now seen corresponding path program 6 times [2021-01-07 05:08:27,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:27,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863958664] [2021-01-07 05:08:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-07 05:08:27,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863958664] [2021-01-07 05:08:27,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798426603] [2021-01-07 05:08:27,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:27,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-07 05:08:27,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:27,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:27,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:27,857 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:08:27,858 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:08:27,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:27,870 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:27,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:27,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2021-01-07 05:08:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2021-01-07 05:08:28,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:28,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 6] total 37 [2021-01-07 05:08:28,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370643734] [2021-01-07 05:08:28,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-07 05:08:28,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-07 05:08:28,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:08:28,523 INFO L87 Difference]: Start difference. First operand 214 states and 225 transitions. Second operand 37 states. [2021-01-07 05:08:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:39,916 INFO L93 Difference]: Finished difference Result 854 states and 884 transitions. [2021-01-07 05:08:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-01-07 05:08:39,917 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 149 [2021-01-07 05:08:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:39,921 INFO L225 Difference]: With dead ends: 854 [2021-01-07 05:08:39,921 INFO L226 Difference]: Without dead ends: 837 [2021-01-07 05:08:39,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8069 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=7131, Invalid=16739, Unknown=0, NotChecked=0, Total=23870 [2021-01-07 05:08:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-01-07 05:08:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 200. [2021-01-07 05:08:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-01-07 05:08:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 209 transitions. [2021-01-07 05:08:39,930 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 209 transitions. Word has length 149 [2021-01-07 05:08:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:39,931 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 209 transitions. [2021-01-07 05:08:39,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-07 05:08:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 209 transitions. [2021-01-07 05:08:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-01-07 05:08:39,932 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:39,932 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:40,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:08:40,147 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1416335279, now seen corresponding path program 4 times [2021-01-07 05:08:40,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:40,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297322632] [2021-01-07 05:08:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:08:40,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297322632] [2021-01-07 05:08:40,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136648117] [2021-01-07 05:08:40,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:42,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:42,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:42,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:08:42,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:08:42,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:42,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-01-07 05:08:42,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703179794] [2021-01-07 05:08:42,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:08:42,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:42,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:08:42,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:08:42,697 INFO L87 Difference]: Start difference. First operand 200 states and 209 transitions. Second operand 35 states. [2021-01-07 05:08:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:43,369 INFO L93 Difference]: Finished difference Result 772 states and 803 transitions. [2021-01-07 05:08:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:08:43,370 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 159 [2021-01-07 05:08:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:43,373 INFO L225 Difference]: With dead ends: 772 [2021-01-07 05:08:43,373 INFO L226 Difference]: Without dead ends: 772 [2021-01-07 05:08:43,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:08:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-01-07 05:08:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 204. [2021-01-07 05:08:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-01-07 05:08:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 213 transitions. [2021-01-07 05:08:43,379 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 213 transitions. Word has length 159 [2021-01-07 05:08:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:43,380 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 213 transitions. [2021-01-07 05:08:43,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:08:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 213 transitions. [2021-01-07 05:08:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-01-07 05:08:43,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:43,381 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:43,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:08:43,594 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:43,595 INFO L82 PathProgramCache]: Analyzing trace with hash -724005394, now seen corresponding path program 5 times [2021-01-07 05:08:43,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:43,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701548649] [2021-01-07 05:08:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:08:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701548649] [2021-01-07 05:08:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102237251] [2021-01-07 05:08:44,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:54,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2021-01-07 05:08:54,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:54,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:08:54,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:08:55,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:55,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-01-07 05:08:55,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131431312] [2021-01-07 05:08:55,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:08:55,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:55,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:08:55,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:08:55,033 INFO L87 Difference]: Start difference. First operand 204 states and 213 transitions. Second operand 36 states. [2021-01-07 05:08:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:55,730 INFO L93 Difference]: Finished difference Result 797 states and 829 transitions. [2021-01-07 05:08:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:08:55,730 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 163 [2021-01-07 05:08:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:55,735 INFO L225 Difference]: With dead ends: 797 [2021-01-07 05:08:55,735 INFO L226 Difference]: Without dead ends: 797 [2021-01-07 05:08:55,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:08:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-01-07 05:08:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 208. [2021-01-07 05:08:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2021-01-07 05:08:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2021-01-07 05:08:55,742 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 163 [2021-01-07 05:08:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:55,742 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2021-01-07 05:08:55,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:08:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2021-01-07 05:08:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-01-07 05:08:55,743 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:55,743 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:55,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:08:55,954 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:55,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1567266059, now seen corresponding path program 6 times [2021-01-07 05:08:55,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:55,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090079117] [2021-01-07 05:08:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-07 05:08:56,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090079117] [2021-01-07 05:08:56,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612709885] [2021-01-07 05:08:56,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:56,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-07 05:08:56,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:56,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:08:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:56,997 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_27|]} [2021-01-07 05:08:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,003 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:08:57,004 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,022 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:08:57,024 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:08:57,275 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2021-01-07 05:08:57,277 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:18 [2021-01-07 05:08:57,466 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-01-07 05:08:57,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,479 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,480 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:08:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2021-01-07 05:08:57,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2021-01-07 05:08:57,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,672 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2021-01-07 05:08:57,674 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,694 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:57,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:56 [2021-01-07 05:08:58,194 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-01-07 05:08:58,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:58,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:58,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:58,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:3 [2021-01-07 05:08:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2021-01-07 05:08:58,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:58,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 23] total 57 [2021-01-07 05:08:58,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701286380] [2021-01-07 05:08:58,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-07 05:08:58,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:58,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-07 05:08:58,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2041, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:08:58,486 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand 57 states. [2021-01-07 05:09:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:03,174 INFO L93 Difference]: Finished difference Result 815 states and 871 transitions. [2021-01-07 05:09:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-07 05:09:03,174 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 167 [2021-01-07 05:09:03,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:03,179 INFO L225 Difference]: With dead ends: 815 [2021-01-07 05:09:03,179 INFO L226 Difference]: Without dead ends: 815 [2021-01-07 05:09:03,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3818, Invalid=7954, Unknown=0, NotChecked=0, Total=11772 [2021-01-07 05:09:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-01-07 05:09:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 224. [2021-01-07 05:09:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-01-07 05:09:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2021-01-07 05:09:03,198 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 167 [2021-01-07 05:09:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:03,199 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions. [2021-01-07 05:09:03,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2021-01-07 05:09:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions. [2021-01-07 05:09:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-07 05:09:03,200 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:03,200 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:03,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:09:03,414 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 250530360, now seen corresponding path program 7 times [2021-01-07 05:09:03,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:03,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787166382] [2021-01-07 05:09:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:09:04,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787166382] [2021-01-07 05:09:04,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072984168] [2021-01-07 05:09:04,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:09:04,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2458 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:09:04,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:04,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-01-07 05:09:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540460570] [2021-01-07 05:09:04,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:09:04,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:09:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:09:04,809 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand 39 states. [2021-01-07 05:09:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:05,634 INFO L93 Difference]: Finished difference Result 879 states and 914 transitions. [2021-01-07 05:09:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-07 05:09:05,635 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 180 [2021-01-07 05:09:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:05,638 INFO L225 Difference]: With dead ends: 879 [2021-01-07 05:09:05,638 INFO L226 Difference]: Without dead ends: 879 [2021-01-07 05:09:05,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:09:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-01-07 05:09:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 228. [2021-01-07 05:09:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2021-01-07 05:09:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 237 transitions. [2021-01-07 05:09:05,647 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 237 transitions. Word has length 180 [2021-01-07 05:09:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:05,647 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 237 transitions. [2021-01-07 05:09:05,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:09:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 237 transitions. [2021-01-07 05:09:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-01-07 05:09:05,649 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:05,649 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:05,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:09:05,865 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1101905733, now seen corresponding path program 8 times [2021-01-07 05:09:05,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:05,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957204296] [2021-01-07 05:09:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:09:06,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957204296] [2021-01-07 05:09:06,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325231086] [2021-01-07 05:09:06,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:07,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:07,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:07,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:09:07,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:09:07,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:07,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-01-07 05:09:07,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788440840] [2021-01-07 05:09:07,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:09:07,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:07,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:09:07,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:09:07,357 INFO L87 Difference]: Start difference. First operand 228 states and 237 transitions. Second operand 40 states. [2021-01-07 05:09:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:08,171 INFO L93 Difference]: Finished difference Result 904 states and 940 transitions. [2021-01-07 05:09:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-07 05:09:08,172 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 184 [2021-01-07 05:09:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:08,175 INFO L225 Difference]: With dead ends: 904 [2021-01-07 05:09:08,175 INFO L226 Difference]: Without dead ends: 904 [2021-01-07 05:09:08,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:09:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-01-07 05:09:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 232. [2021-01-07 05:09:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-01-07 05:09:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions. [2021-01-07 05:09:08,183 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 184 [2021-01-07 05:09:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:08,184 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions. [2021-01-07 05:09:08,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:09:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions. [2021-01-07 05:09:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-01-07 05:09:08,185 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:08,185 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:08,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:09:08,400 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:08,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468610, now seen corresponding path program 9 times [2021-01-07 05:09:08,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:08,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693644001] [2021-01-07 05:09:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:09:09,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693644001] [2021-01-07 05:09:09,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607335526] [2021-01-07 05:09:09,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:09,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-07 05:09:09,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:09,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:09:09,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:09,699 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:09:09,701 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:09,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:09,710 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:09,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:09:10,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-01-07 05:09:10,043 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:10,059 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,059 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:09:10,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:09:10,156 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-01-07 05:09:10,157 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:10,175 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2021-01-07 05:09:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:09:10,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-01-07 05:09:10,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:10,267 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2021-01-07 05:09:10,634 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-01-07 05:09:10,635 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:10,641 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:10,641 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:09:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2744 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2021-01-07 05:09:10,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:10,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 16] total 54 [2021-01-07 05:09:10,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173338195] [2021-01-07 05:09:10,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-07 05:09:10,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-07 05:09:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=1885, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:09:10,841 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand 54 states. [2021-01-07 05:09:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:41,030 INFO L93 Difference]: Finished difference Result 1390 states and 1427 transitions. [2021-01-07 05:09:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 332 states. [2021-01-07 05:09:41,030 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 188 [2021-01-07 05:09:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:41,035 INFO L225 Difference]: With dead ends: 1390 [2021-01-07 05:09:41,036 INFO L226 Difference]: Without dead ends: 1390 [2021-01-07 05:09:41,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63209 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=31135, Invalid=112127, Unknown=0, NotChecked=0, Total=143262 [2021-01-07 05:09:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-01-07 05:09:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 235. [2021-01-07 05:09:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-01-07 05:09:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 244 transitions. [2021-01-07 05:09:41,055 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 244 transitions. Word has length 188 [2021-01-07 05:09:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:41,055 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 244 transitions. [2021-01-07 05:09:41,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-07 05:09:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 244 transitions. [2021-01-07 05:09:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-01-07 05:09:41,057 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:41,057 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:41,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-07 05:09:41,273 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:41,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2095452112, now seen corresponding path program 10 times [2021-01-07 05:09:41,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:41,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083097409] [2021-01-07 05:09:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-01-07 05:09:42,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083097409] [2021-01-07 05:09:42,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309850163] [2021-01-07 05:09:42,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:42,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:09:42,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:42,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:09:42,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:42,882 INFO L348 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-01-07 05:09:42,883 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:09:42,884 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:42,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:42,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:42,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2021-01-07 05:09:43,262 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:43,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2021-01-07 05:09:43,265 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:43,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:43,267 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:43,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2021-01-07 05:09:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2021-01-07 05:09:43,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:43,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 14] total 52 [2021-01-07 05:09:43,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210458984] [2021-01-07 05:09:43,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-07 05:09:43,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-07 05:09:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1692, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:09:43,390 INFO L87 Difference]: Start difference. First operand 235 states and 244 transitions. Second operand 52 states. [2021-01-07 05:09:45,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:45,070 INFO L93 Difference]: Finished difference Result 1219 states and 1257 transitions. [2021-01-07 05:09:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-07 05:09:45,071 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 194 [2021-01-07 05:09:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:45,075 INFO L225 Difference]: With dead ends: 1219 [2021-01-07 05:09:45,075 INFO L226 Difference]: Without dead ends: 1219 [2021-01-07 05:09:45,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1520, Invalid=2640, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:09:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-01-07 05:09:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 247. [2021-01-07 05:09:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2021-01-07 05:09:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 256 transitions. [2021-01-07 05:09:45,085 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 256 transitions. Word has length 194 [2021-01-07 05:09:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:45,085 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 256 transitions. [2021-01-07 05:09:45,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-07 05:09:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 256 transitions. [2021-01-07 05:09:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-01-07 05:09:45,086 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:45,087 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:45,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:45,302 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:45,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1664208648, now seen corresponding path program 11 times [2021-01-07 05:09:45,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:45,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351976235] [2021-01-07 05:09:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-01-07 05:09:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351976235] [2021-01-07 05:09:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040652575] [2021-01-07 05:09:46,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:46,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-01-07 05:10:46,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:46,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:10:46,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-01-07 05:10:46,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:46,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-01-07 05:10:46,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969924013] [2021-01-07 05:10:46,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:10:46,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:10:46,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:10:46,601 INFO L87 Difference]: Start difference. First operand 247 states and 256 transitions. Second operand 43 states. [2021-01-07 05:10:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:47,648 INFO L93 Difference]: Finished difference Result 1245 states and 1284 transitions. [2021-01-07 05:10:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-07 05:10:47,649 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2021-01-07 05:10:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:47,655 INFO L225 Difference]: With dead ends: 1245 [2021-01-07 05:10:47,655 INFO L226 Difference]: Without dead ends: 1245 [2021-01-07 05:10:47,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:10:47,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-01-07 05:10:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 251. [2021-01-07 05:10:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2021-01-07 05:10:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 260 transitions. [2021-01-07 05:10:47,665 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 260 transitions. Word has length 203 [2021-01-07 05:10:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:47,665 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 260 transitions. [2021-01-07 05:10:47,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:10:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 260 transitions. [2021-01-07 05:10:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-01-07 05:10:47,666 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:47,667 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:47,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:47,867 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:47,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1055541979, now seen corresponding path program 12 times [2021-01-07 05:10:47,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:47,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18619939] [2021-01-07 05:10:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-01-07 05:10:49,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18619939] [2021-01-07 05:10:49,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927321812] [2021-01-07 05:10:49,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:49,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:10:49,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:49,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:10:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:49,620 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:10:49,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:49,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:49,631 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:49,631 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:10:50,025 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-01-07 05:10:50,026 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:50,041 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:10:50,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:10:50,167 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-01-07 05:10:50,169 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:50,188 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2021-01-07 05:10:50,713 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-01-07 05:10:50,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:50,722 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:50,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:10:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2021-01-07 05:10:50,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:50,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 17] total 58 [2021-01-07 05:10:50,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363884535] [2021-01-07 05:10:50,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-01-07 05:10:50,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:50,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-01-07 05:10:50,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=2155, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:10:50,944 INFO L87 Difference]: Start difference. First operand 251 states and 260 transitions. Second operand 58 states. [2021-01-07 05:11:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:32,499 INFO L93 Difference]: Finished difference Result 1777 states and 1817 transitions. [2021-01-07 05:11:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2021-01-07 05:11:32,500 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2021-01-07 05:11:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:32,505 INFO L225 Difference]: With dead ends: 1777 [2021-01-07 05:11:32,505 INFO L226 Difference]: Without dead ends: 1777 [2021-01-07 05:11:32,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88699 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=39093, Invalid=160269, Unknown=0, NotChecked=0, Total=199362 [2021-01-07 05:11:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2021-01-07 05:11:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 254. [2021-01-07 05:11:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-01-07 05:11:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 263 transitions. [2021-01-07 05:11:32,522 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 263 transitions. Word has length 207 [2021-01-07 05:11:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:32,523 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 263 transitions. [2021-01-07 05:11:32,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2021-01-07 05:11:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 263 transitions. [2021-01-07 05:11:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-07 05:11:32,524 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:32,524 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:32,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:32,725 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1691991757, now seen corresponding path program 13 times [2021-01-07 05:11:32,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:32,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234757804] [2021-01-07 05:11:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:11:34,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234757804] [2021-01-07 05:11:34,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845854309] [2021-01-07 05:11:34,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-07 05:11:34,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:11:34,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:34,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-01-07 05:11:34,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069780209] [2021-01-07 05:11:34,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-07 05:11:34,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:34,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-07 05:11:34,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:11:34,993 INFO L87 Difference]: Start difference. First operand 254 states and 263 transitions. Second operand 45 states. [2021-01-07 05:11:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:36,206 INFO L93 Difference]: Finished difference Result 1582 states and 1623 transitions. [2021-01-07 05:11:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-07 05:11:36,206 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 213 [2021-01-07 05:11:36,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:36,211 INFO L225 Difference]: With dead ends: 1582 [2021-01-07 05:11:36,211 INFO L226 Difference]: Without dead ends: 1582 [2021-01-07 05:11:36,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:11:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2021-01-07 05:11:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 258. [2021-01-07 05:11:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-01-07 05:11:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 267 transitions. [2021-01-07 05:11:36,226 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 267 transitions. Word has length 213 [2021-01-07 05:11:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:36,226 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 267 transitions. [2021-01-07 05:11:36,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-07 05:11:36,227 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 267 transitions. [2021-01-07 05:11:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-01-07 05:11:36,228 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:36,228 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:36,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-01-07 05:11:36,444 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:36,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1882527984, now seen corresponding path program 14 times [2021-01-07 05:11:36,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:36,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549774620] [2021-01-07 05:11:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat