/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_original-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:08:05,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:08:05,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:08:05,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:08:05,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:08:05,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:08:05,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:08:05,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:08:05,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:08:05,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:08:05,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:08:05,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:08:05,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:08:05,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:08:05,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:08:05,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:08:05,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:08:05,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:08:05,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:08:05,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:08:05,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:08:05,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:08:05,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:08:05,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:08:05,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:08:05,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:08:05,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:08:05,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:08:05,601 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 05:08:05,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:08:05,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:08:05,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:08:05,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:08:05,656 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:08:05,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:08:05,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:08:05,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:08:05,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:08:05,657 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:08:05,658 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:08:05,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:08:05,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:08:05,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:08:05,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:08:05,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:08:05,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:08:05,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:08:05,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:05,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:08:05,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:08:05,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:08:05,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:08:05,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:08:05,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:08:06,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:08:06,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:08:06,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:08:06,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:08:06,121 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:08:06,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2021-01-07 05:08:06,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f81e9e05/6b71a3e18da748f6b01cdad07af66376/FLAGead6f2a35 [2021-01-07 05:08:06,842 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:08:06,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2021-01-07 05:08:06,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f81e9e05/6b71a3e18da748f6b01cdad07af66376/FLAGead6f2a35 [2021-01-07 05:08:07,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f81e9e05/6b71a3e18da748f6b01cdad07af66376 [2021-01-07 05:08:07,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:08:07,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:08:07,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:07,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:08:07,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:08:07,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e03b7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07, skipping insertion in model container [2021-01-07 05:08:07,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:08:07,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:08:07,357 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_original-1.i[819,832] 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[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:08:07,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:07,385 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:08:07,399 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_original-1.i[819,832] 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[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:08:07,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:07,425 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:08:07,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07 WrapperNode [2021-01-07 05:08:07,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:07,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:07,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:08:07,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:08:07,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:07,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:08:07,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:08:07,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:08:07,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (1/1) ... [2021-01-07 05:08:07,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:08:07,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:08:07,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:08:07,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:08:07,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (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 05:08:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:08:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:08:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:08:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:08:07,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:08:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:08:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:08:08,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:08:08,106 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:08:08,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:08 BoogieIcfgContainer [2021-01-07 05:08:08,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:08:08,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:08:08,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:08:08,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:08:08,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:08:07" (1/3) ... [2021-01-07 05:08:08,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c993e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:08, skipping insertion in model container [2021-01-07 05:08:08,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:07" (2/3) ... [2021-01-07 05:08:08,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c993e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:08, skipping insertion in model container [2021-01-07 05:08:08,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:08" (3/3) ... [2021-01-07 05:08:08,146 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-1.i [2021-01-07 05:08:08,154 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:08:08,160 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-01-07 05:08:08,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-01-07 05:08:08,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:08:08,201 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:08:08,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:08:08,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:08:08,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:08:08,202 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:08:08,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:08:08,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:08:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-07 05:08:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:08,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:08,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:08,226 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:08:08,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:08,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732164715] [2021-01-07 05:08:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:08,429 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 05:08:08,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732164715] [2021-01-07 05:08:08,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:08,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:08,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263684750] [2021-01-07 05:08:08,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:08,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:08,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:08,458 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2021-01-07 05:08:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:08,538 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-01-07 05:08:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:08,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:08,549 INFO L225 Difference]: With dead ends: 36 [2021-01-07 05:08:08,549 INFO L226 Difference]: Without dead ends: 34 [2021-01-07 05:08:08,551 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 05:08:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-07 05:08:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-07 05:08:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:08:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-01-07 05:08:08,596 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 4 [2021-01-07 05:08:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:08,597 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-01-07 05:08:08,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-01-07 05:08:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:08,598 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:08,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:08,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:08:08,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:08:08,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:08,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170830468] [2021-01-07 05:08:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:08,732 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 05:08:08,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170830468] [2021-01-07 05:08:08,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:08,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:08,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767420768] [2021-01-07 05:08:08,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:08,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:08,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:08,737 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 3 states. [2021-01-07 05:08:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:08,845 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-01-07 05:08:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:08,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:08,851 INFO L225 Difference]: With dead ends: 38 [2021-01-07 05:08:08,851 INFO L226 Difference]: Without dead ends: 38 [2021-01-07 05:08:08,854 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 05:08:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-07 05:08:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-01-07 05:08:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-07 05:08:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-01-07 05:08:08,867 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 4 [2021-01-07 05:08:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:08,867 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-01-07 05:08:08,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-01-07 05:08:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:08:08,870 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:08,870 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:08,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:08:08,871 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:08:08,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:08,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680862465] [2021-01-07 05:08:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,049 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 05:08:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680862465] [2021-01-07 05:08:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302628733] [2021-01-07 05:08:09,050 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 05:08:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:09,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:09,209 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:08:09,210 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 05:08:09,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:09,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:09,237 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 05:08:09,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2021-01-07 05:08:09,306 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 05:08:09,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:09,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:08:09,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276771284] [2021-01-07 05:08:09,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:09,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:09,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:09,309 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 4 states. [2021-01-07 05:08:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:09,419 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-01-07 05:08:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:09,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:08:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:09,421 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:08:09,421 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:08:09,421 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 05:08:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:08:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-01-07 05:08:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-07 05:08:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-01-07 05:08:09,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 8 [2021-01-07 05:08:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:09,428 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-01-07 05:08:09,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-01-07 05:08:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:08:09,429 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:09,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2021-01-07 05:08:09,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:08:09,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:09,646 INFO L82 PathProgramCache]: Analyzing trace with hash 276944844, now seen corresponding path program 2 times [2021-01-07 05:08:09,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:09,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186432080] [2021-01-07 05:08:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,755 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 05:08:09,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186432080] [2021-01-07 05:08:09,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119373481] [2021-01-07 05:08:09,756 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 05:08:09,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:09,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:09,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:09,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:09,866 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:08:09,867 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 05:08:09,869 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:09,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:09,887 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 05:08:09,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2021-01-07 05:08:10,053 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 05:08:10,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:10,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-01-07 05:08:10,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387398118] [2021-01-07 05:08:10,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:10,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:10,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:10,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:10,056 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 6 states. [2021-01-07 05:08:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:10,295 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-01-07 05:08:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:10,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:08:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:10,297 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:08:10,297 INFO L226 Difference]: Without dead ends: 81 [2021-01-07 05:08:10,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-07 05:08:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 57. [2021-01-07 05:08:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:08:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2021-01-07 05:08:10,306 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 12 [2021-01-07 05:08:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:10,306 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2021-01-07 05:08:10,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2021-01-07 05:08:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:08:10,307 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:10,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-01-07 05:08:10,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:10,521 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:10,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2021-01-07 05:08:10,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:10,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923414758] [2021-01-07 05:08:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:10,639 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 05:08:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923414758] [2021-01-07 05:08:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711602731] [2021-01-07 05:08:10,640 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 05:08:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:10,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:08:10,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:10,770 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 05:08:10,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:10,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-01-07 05:08:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705352255] [2021-01-07 05:08:10,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:10,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:10,773 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand 8 states. [2021-01-07 05:08:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:11,022 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-01-07 05:08:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:08:11,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-01-07 05:08:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:11,026 INFO L225 Difference]: With dead ends: 115 [2021-01-07 05:08:11,026 INFO L226 Difference]: Without dead ends: 115 [2021-01-07 05:08:11,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:08:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-07 05:08:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 61. [2021-01-07 05:08:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:08:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2021-01-07 05:08:11,035 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 13 [2021-01-07 05:08:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:11,035 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2021-01-07 05:08:11,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2021-01-07 05:08:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:08:11,036 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:11,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:11,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:11,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059869, now seen corresponding path program 1 times [2021-01-07 05:08:11,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:11,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833621806] [2021-01-07 05:08:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:11,295 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 05:08:11,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833621806] [2021-01-07 05:08:11,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:11,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:11,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865759505] [2021-01-07 05:08:11,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:11,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:11,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:11,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:11,298 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 3 states. [2021-01-07 05:08:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:11,320 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2021-01-07 05:08:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:11,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:08:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:11,322 INFO L225 Difference]: With dead ends: 59 [2021-01-07 05:08:11,322 INFO L226 Difference]: Without dead ends: 59 [2021-01-07 05:08:11,323 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 05:08:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-07 05:08:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-01-07 05:08:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:08:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2021-01-07 05:08:11,328 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 20 [2021-01-07 05:08:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:11,328 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2021-01-07 05:08:11,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2021-01-07 05:08:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:08:11,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:11,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:11,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:08:11,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2110059868, now seen corresponding path program 1 times [2021-01-07 05:08:11,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:11,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572585193] [2021-01-07 05:08:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:11,413 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 05:08:11,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572585193] [2021-01-07 05:08:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143006754] [2021-01-07 05:08:11,418 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 05:08:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:11,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:08:11,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:11,521 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 05:08:11,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:11,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:08:11,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409520338] [2021-01-07 05:08:11,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:11,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:11,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:11,524 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 7 states. [2021-01-07 05:08:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:11,682 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-01-07 05:08:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:11,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-07 05:08:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:11,684 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:08:11,684 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:08:11,685 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 05:08:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:08:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 63. [2021-01-07 05:08:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:08:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-01-07 05:08:11,691 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 20 [2021-01-07 05:08:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:11,691 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-01-07 05:08:11,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-01-07 05:08:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:08:11,692 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:11,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:11,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:11,907 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:11,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1143766311, now seen corresponding path program 2 times [2021-01-07 05:08:11,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:11,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571029313] [2021-01-07 05:08:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:12,013 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 05:08:12,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571029313] [2021-01-07 05:08:12,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863809179] [2021-01-07 05:08:12,014 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 05:08:12,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:12,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:12,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:12,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:12,074 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:08:12,075 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 05:08:12,076 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:12,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:12,085 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 05:08:12,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2021-01-07 05:08:12,145 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 05:08:12,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:12,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:08:12,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864355748] [2021-01-07 05:08:12,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:12,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:12,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:12,148 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 4 states. [2021-01-07 05:08:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:12,207 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-01-07 05:08:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:12,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-01-07 05:08:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:12,208 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:08:12,208 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:08:12,209 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 05:08:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:08:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2021-01-07 05:08:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:08:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-01-07 05:08:12,213 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 24 [2021-01-07 05:08:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:12,214 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-01-07 05:08:12,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-01-07 05:08:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:08:12,215 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:12,215 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:12,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:12,430 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:12,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:12,431 INFO L82 PathProgramCache]: Analyzing trace with hash -352203591, now seen corresponding path program 1 times [2021-01-07 05:08:12,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:12,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733927251] [2021-01-07 05:08:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:12,488 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 05:08:12,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733927251] [2021-01-07 05:08:12,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024173148] [2021-01-07 05:08:12,489 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 05:08:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:12,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:12,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:12,608 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 05:08:12,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:12,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:08:12,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806359503] [2021-01-07 05:08:12,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:12,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:12,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:12,612 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 8 states. [2021-01-07 05:08:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:12,794 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2021-01-07 05:08:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:12,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2021-01-07 05:08:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:12,795 INFO L225 Difference]: With dead ends: 157 [2021-01-07 05:08:12,796 INFO L226 Difference]: Without dead ends: 157 [2021-01-07 05:08:12,796 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 05:08:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-07 05:08:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 67. [2021-01-07 05:08:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-07 05:08:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2021-01-07 05:08:12,802 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 26 [2021-01-07 05:08:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:12,802 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2021-01-07 05:08:12,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2021-01-07 05:08:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:08:12,803 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:12,804 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:13,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:13,019 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1281757436, now seen corresponding path program 2 times [2021-01-07 05:08:13,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:13,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122565549] [2021-01-07 05:08:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:13,088 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 05:08:13,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122565549] [2021-01-07 05:08:13,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629613034] [2021-01-07 05:08:13,089 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 05:08:13,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:13,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:13,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:08:13,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:13,206 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 05:08:13,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:13,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:08:13,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089494559] [2021-01-07 05:08:13,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:08:13,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:08:13,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:13,209 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 9 states. [2021-01-07 05:08:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:13,395 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2021-01-07 05:08:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:08:13,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-01-07 05:08:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:13,397 INFO L225 Difference]: With dead ends: 183 [2021-01-07 05:08:13,397 INFO L226 Difference]: Without dead ends: 183 [2021-01-07 05:08:13,398 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 05:08:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-01-07 05:08:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 71. [2021-01-07 05:08:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-07 05:08:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-01-07 05:08:13,403 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 30 [2021-01-07 05:08:13,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:13,403 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-01-07 05:08:13,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:08:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-01-07 05:08:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:08:13,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:13,405 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:13,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:08:13,619 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 3 times [2021-01-07 05:08:13,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:13,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276029239] [2021-01-07 05:08:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:13,693 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 05:08:13,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276029239] [2021-01-07 05:08:13,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13237338] [2021-01-07 05:08:13,694 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 05:08:13,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:08:13,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:13,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:08:13,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:13,938 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 05:08:13,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:13,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-01-07 05:08:13,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072593539] [2021-01-07 05:08:13,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:08:13,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:08:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:08:13,940 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 15 states. [2021-01-07 05:08:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:14,466 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2021-01-07 05:08:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:08:14,467 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2021-01-07 05:08:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:14,469 INFO L225 Difference]: With dead ends: 201 [2021-01-07 05:08:14,469 INFO L226 Difference]: Without dead ends: 201 [2021-01-07 05:08:14,469 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 05:08:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-01-07 05:08:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 68. [2021-01-07 05:08:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-07 05:08:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-01-07 05:08:14,474 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 34 [2021-01-07 05:08:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:14,474 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-01-07 05:08:14,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:08:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-01-07 05:08:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-07 05:08:14,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:14,476 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:14,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-07 05:08:14,692 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:14,694 INFO L82 PathProgramCache]: Analyzing trace with hash -153043895, now seen corresponding path program 1 times [2021-01-07 05:08:14,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:14,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140697842] [2021-01-07 05:08:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:14,787 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 05:08:14,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140697842] [2021-01-07 05:08:14,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095944538] [2021-01-07 05:08:14,788 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 05:08:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:14,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:08:14,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:14,923 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 05:08:14,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:14,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-07 05:08:14,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24670344] [2021-01-07 05:08:14,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:08:14,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:14,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:08:14,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:08:14,926 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 11 states. [2021-01-07 05:08:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:15,137 INFO L93 Difference]: Finished difference Result 231 states and 241 transitions. [2021-01-07 05:08:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:08:15,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2021-01-07 05:08:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:15,140 INFO L225 Difference]: With dead ends: 231 [2021-01-07 05:08:15,140 INFO L226 Difference]: Without dead ends: 231 [2021-01-07 05:08:15,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 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 05:08:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-01-07 05:08:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 72. [2021-01-07 05:08:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-07 05:08:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-01-07 05:08:15,152 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 39 [2021-01-07 05:08:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:15,152 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-01-07 05:08:15,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:08:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-01-07 05:08:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:08:15,156 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:15,157 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:15,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:15,371 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:15,372 INFO L82 PathProgramCache]: Analyzing trace with hash -23675674, now seen corresponding path program 2 times [2021-01-07 05:08:15,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:15,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664813769] [2021-01-07 05:08:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:15,519 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 05:08:15,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664813769] [2021-01-07 05:08:15,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118982711] [2021-01-07 05:08:15,520 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 05:08:15,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:15,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:15,701 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 05:08:15,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:15,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-01-07 05:08:15,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113051787] [2021-01-07 05:08:15,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:15,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:15,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:15,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:15,706 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 4 states. [2021-01-07 05:08:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:15,760 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-01-07 05:08:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:15,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-01-07 05:08:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:15,762 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:08:15,762 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:08:15,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:08:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-01-07 05:08:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:08:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-01-07 05:08:15,765 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 43 [2021-01-07 05:08:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:15,766 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-01-07 05:08:15,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-01-07 05:08:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:08:15,773 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:15,773 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:15,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:15,990 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1564990626, now seen corresponding path program 1 times [2021-01-07 05:08:15,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148120890] [2021-01-07 05:08:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:16,135 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 05:08:16,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148120890] [2021-01-07 05:08:16,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110935466] [2021-01-07 05:08:16,136 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 05:08:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:16,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:08:16,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:16,288 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 05:08:16,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:16,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-07 05:08:16,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818980515] [2021-01-07 05:08:16,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:08:16,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:16,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:08:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:16,291 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 12 states. [2021-01-07 05:08:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:16,542 INFO L93 Difference]: Finished difference Result 227 states and 238 transitions. [2021-01-07 05:08:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:08:16,543 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-07 05:08:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:16,547 INFO L225 Difference]: With dead ends: 227 [2021-01-07 05:08:16,547 INFO L226 Difference]: Without dead ends: 227 [2021-01-07 05:08:16,548 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 05:08:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-01-07 05:08:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 73. [2021-01-07 05:08:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-07 05:08:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-01-07 05:08:16,552 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 45 [2021-01-07 05:08:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:16,552 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-01-07 05:08:16,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:08:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-01-07 05:08:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:08:16,553 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:16,553 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:16,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:08:16,765 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1246743681, now seen corresponding path program 2 times [2021-01-07 05:08:16,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:16,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254165549] [2021-01-07 05:08:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:16,890 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 05:08:16,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254165549] [2021-01-07 05:08:16,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670500099] [2021-01-07 05:08:16,891 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 05:08:16,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:16,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:16,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:16,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:16,967 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:08:16,972 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 05:08:16,973 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:16,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:16,982 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:16,982 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2021-01-07 05:08:17,115 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 05:08:17,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:17,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3] total 14 [2021-01-07 05:08:17,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86346265] [2021-01-07 05:08:17,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:08:17,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:17,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:08:17,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:08:17,119 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 14 states. [2021-01-07 05:08:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:17,923 INFO L93 Difference]: Finished difference Result 218 states and 230 transitions. [2021-01-07 05:08:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:08:17,924 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2021-01-07 05:08:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:17,926 INFO L225 Difference]: With dead ends: 218 [2021-01-07 05:08:17,926 INFO L226 Difference]: Without dead ends: 218 [2021-01-07 05:08:17,929 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 05:08:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-01-07 05:08:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2021-01-07 05:08:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-01-07 05:08:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2021-01-07 05:08:17,936 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 49 [2021-01-07 05:08:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:17,936 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2021-01-07 05:08:17,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:08:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2021-01-07 05:08:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:08:17,940 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:17,941 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:18,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:08:18,152 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:18,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1930527712, now seen corresponding path program 1 times [2021-01-07 05:08:18,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:18,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417882852] [2021-01-07 05:08:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:18,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417882852] [2021-01-07 05:08:18,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935698207] [2021-01-07 05:08:18,324 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 05:08:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:18,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:08:18,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:18,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:18,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-07 05:08:18,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161240095] [2021-01-07 05:08:18,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:08:18,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:08:18,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:08:18,493 INFO L87 Difference]: Start difference. First operand 187 states and 209 transitions. Second operand 15 states. [2021-01-07 05:08:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:18,756 INFO L93 Difference]: Finished difference Result 254 states and 268 transitions. [2021-01-07 05:08:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:08:18,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2021-01-07 05:08:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:18,758 INFO L225 Difference]: With dead ends: 254 [2021-01-07 05:08:18,758 INFO L226 Difference]: Without dead ends: 254 [2021-01-07 05:08:18,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:08:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-01-07 05:08:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 191. [2021-01-07 05:08:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-01-07 05:08:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2021-01-07 05:08:18,763 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 58 [2021-01-07 05:08:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:18,763 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2021-01-07 05:08:18,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:08:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2021-01-07 05:08:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 05:08:18,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:18,764 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:08:18,978 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1682377629, now seen corresponding path program 2 times [2021-01-07 05:08:18,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:18,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493971651] [2021-01-07 05:08:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:19,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493971651] [2021-01-07 05:08:19,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175732163] [2021-01-07 05:08:19,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:19,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:19,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:19,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:08:19,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:19,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:08:19,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:19,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:19,317 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 05:08:19,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2021-01-07 05:08:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-01-07 05:08:19,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:19,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2021-01-07 05:08:19,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199535739] [2021-01-07 05:08:19,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:19,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:19,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:08:19,340 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand 8 states. [2021-01-07 05:08:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:19,443 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2021-01-07 05:08:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:19,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2021-01-07 05:08:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:19,445 INFO L225 Difference]: With dead ends: 196 [2021-01-07 05:08:19,445 INFO L226 Difference]: Without dead ends: 193 [2021-01-07 05:08:19,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:08:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-07 05:08:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2021-01-07 05:08:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-01-07 05:08:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 212 transitions. [2021-01-07 05:08:19,450 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 212 transitions. Word has length 62 [2021-01-07 05:08:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:19,450 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 212 transitions. [2021-01-07 05:08:19,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 212 transitions. [2021-01-07 05:08:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-07 05:08:19,451 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:19,451 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:19,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:19,666 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:19,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash 465497338, now seen corresponding path program 1 times [2021-01-07 05:08:19,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:19,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741168116] [2021-01-07 05:08:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:19,817 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 05:08:19,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741168116] [2021-01-07 05:08:19,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098867762] [2021-01-07 05:08:19,818 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 05:08:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:19,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:08:19,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:19,977 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 05:08:19,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:19,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-07 05:08:19,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497238387] [2021-01-07 05:08:19,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:08:19,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:08:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:08:19,983 INFO L87 Difference]: Start difference. First operand 191 states and 212 transitions. Second operand 16 states. [2021-01-07 05:08:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:20,324 INFO L93 Difference]: Finished difference Result 274 states and 288 transitions. [2021-01-07 05:08:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:08:20,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2021-01-07 05:08:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:20,327 INFO L225 Difference]: With dead ends: 274 [2021-01-07 05:08:20,327 INFO L226 Difference]: Without dead ends: 274 [2021-01-07 05:08:20,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:08:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-01-07 05:08:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 195. [2021-01-07 05:08:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2021-01-07 05:08:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 216 transitions. [2021-01-07 05:08:20,334 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 216 transitions. Word has length 67 [2021-01-07 05:08:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:20,334 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 216 transitions. [2021-01-07 05:08:20,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:08:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 216 transitions. [2021-01-07 05:08:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-07 05:08:20,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:20,335 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, 1] [2021-01-07 05:08:20,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:08:20,550 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1819545623, now seen corresponding path program 2 times [2021-01-07 05:08:20,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:20,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807325752] [2021-01-07 05:08:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:20,717 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 05:08:20,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807325752] [2021-01-07 05:08:20,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422339643] [2021-01-07 05:08:20,718 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 05:08:20,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:20,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:20,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:08:20,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:20,922 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 05:08:20,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:20,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-07 05:08:20,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406170182] [2021-01-07 05:08:20,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:08:20,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:08:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:08:20,924 INFO L87 Difference]: Start difference. First operand 195 states and 216 transitions. Second operand 17 states. [2021-01-07 05:08:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:21,261 INFO L93 Difference]: Finished difference Result 295 states and 310 transitions. [2021-01-07 05:08:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:08:21,262 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2021-01-07 05:08:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:21,264 INFO L225 Difference]: With dead ends: 295 [2021-01-07 05:08:21,264 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 05:08:21,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 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 05:08:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 05:08:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 199. [2021-01-07 05:08:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-07 05:08:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 220 transitions. [2021-01-07 05:08:21,290 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 220 transitions. Word has length 71 [2021-01-07 05:08:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:21,292 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 220 transitions. [2021-01-07 05:08:21,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:08:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 220 transitions. [2021-01-07 05:08:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-07 05:08:21,295 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:21,295 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, 1] [2021-01-07 05:08:21,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:21,509 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1232624820, now seen corresponding path program 3 times [2021-01-07 05:08:21,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:21,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772607102] [2021-01-07 05:08:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:21,715 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 05:08:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772607102] [2021-01-07 05:08:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569749511] [2021-01-07 05:08:21,716 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 05:08:21,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:08:21,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:08:21,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:21,896 INFO L348 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-01-07 05:08:21,897 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 05:08:21,898 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:21,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:21,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:21,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 05:08:21,989 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:21,990 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 05:08:21,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:21,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:21,995 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 05:08:21,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2021-01-07 05:08:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-01-07 05:08:22,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:22,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 25 [2021-01-07 05:08:22,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460498191] [2021-01-07 05:08:22,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:08:22,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:08:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=381, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:08:22,043 INFO L87 Difference]: Start difference. First operand 199 states and 220 transitions. Second operand 25 states. [2021-01-07 05:08:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:23,288 INFO L93 Difference]: Finished difference Result 463 states and 479 transitions. [2021-01-07 05:08:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:08:23,289 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 75 [2021-01-07 05:08:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:23,291 INFO L225 Difference]: With dead ends: 463 [2021-01-07 05:08:23,291 INFO L226 Difference]: Without dead ends: 463 [2021-01-07 05:08:23,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1124, Invalid=2182, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:08:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-01-07 05:08:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 210. [2021-01-07 05:08:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-07 05:08:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2021-01-07 05:08:23,300 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 75 [2021-01-07 05:08:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:23,300 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2021-01-07 05:08:23,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:08:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2021-01-07 05:08:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:08:23,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:23,302 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:23,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:23,515 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1437901644, now seen corresponding path program 4 times [2021-01-07 05:08:23,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:23,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633407268] [2021-01-07 05:08:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:08:23,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633407268] [2021-01-07 05:08:23,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433595840] [2021-01-07 05:08:23,746 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 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 05:08:24,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:24,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:24,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-07 05:08:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:08:24,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:24,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-07 05:08:24,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860018122] [2021-01-07 05:08:24,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:08:24,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:08:24,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:08:24,208 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand 19 states. [2021-01-07 05:08:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:24,596 INFO L93 Difference]: Finished difference Result 343 states and 360 transitions. [2021-01-07 05:08:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:08:24,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2021-01-07 05:08:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:24,600 INFO L225 Difference]: With dead ends: 343 [2021-01-07 05:08:24,600 INFO L226 Difference]: Without dead ends: 343 [2021-01-07 05:08:24,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:08:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-01-07 05:08:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 214. [2021-01-07 05:08:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-07 05:08:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 235 transitions. [2021-01-07 05:08:24,606 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 235 transitions. Word has length 84 [2021-01-07 05:08:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:24,606 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 235 transitions. [2021-01-07 05:08:24,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:08:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 235 transitions. [2021-01-07 05:08:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-07 05:08:24,607 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:24,607 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:24,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-07 05:08:24,821 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash 470842831, now seen corresponding path program 5 times [2021-01-07 05:08:24,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:24,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659929344] [2021-01-07 05:08:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:08:25,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659929344] [2021-01-07 05:08:25,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705908118] [2021-01-07 05:08:25,080 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 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 05:08:25,282 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-07 05:08:25,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:25,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:08:25,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:08:25,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:25,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-07 05:08:25,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826621385] [2021-01-07 05:08:25,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:08:25,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:25,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:08:25,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:08:25,395 INFO L87 Difference]: Start difference. First operand 214 states and 235 transitions. Second operand 20 states. [2021-01-07 05:08:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:25,871 INFO L93 Difference]: Finished difference Result 364 states and 382 transitions. [2021-01-07 05:08:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:08:25,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2021-01-07 05:08:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:25,875 INFO L225 Difference]: With dead ends: 364 [2021-01-07 05:08:25,875 INFO L226 Difference]: Without dead ends: 364 [2021-01-07 05:08:25,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:08:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-01-07 05:08:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 218. [2021-01-07 05:08:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-01-07 05:08:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 239 transitions. [2021-01-07 05:08:25,881 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 239 transitions. Word has length 88 [2021-01-07 05:08:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:25,882 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 239 transitions. [2021-01-07 05:08:25,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:08:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 239 transitions. [2021-01-07 05:08:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-01-07 05:08:25,883 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:25,883 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:26,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:26,094 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:26,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:26,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1143299794, now seen corresponding path program 6 times [2021-01-07 05:08:26,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:26,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253181278] [2021-01-07 05:08:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:08:26,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253181278] [2021-01-07 05:08:26,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919428013] [2021-01-07 05:08:26,378 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 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 05:08:26,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:08:26,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:26,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-07 05:08:26,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:26,473 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 05:08:26,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:26,482 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:08:26,643 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 05:08:26,644 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:26,655 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:08:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:26,718 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 27 treesize of output 29 [2021-01-07 05:08:26,720 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,732 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:26,733 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 05:08:26,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:22 [2021-01-07 05:08:26,811 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 05:08:26,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:26,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:26,817 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 05:08:26,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:08:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2021-01-07 05:08:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 29 [2021-01-07 05:08:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665718337] [2021-01-07 05:08:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:08:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:08:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:08:26,891 INFO L87 Difference]: Start difference. First operand 218 states and 239 transitions. Second operand 29 states. [2021-01-07 05:08:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:28,756 INFO L93 Difference]: Finished difference Result 383 states and 402 transitions. [2021-01-07 05:08:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:08:28,756 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2021-01-07 05:08:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:28,759 INFO L225 Difference]: With dead ends: 383 [2021-01-07 05:08:28,760 INFO L226 Difference]: Without dead ends: 383 [2021-01-07 05:08:28,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1438, Invalid=3118, Unknown=0, NotChecked=0, Total=4556 [2021-01-07 05:08:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-01-07 05:08:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 215. [2021-01-07 05:08:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2021-01-07 05:08:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 235 transitions. [2021-01-07 05:08:28,768 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 235 transitions. Word has length 92 [2021-01-07 05:08:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:28,768 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 235 transitions. [2021-01-07 05:08:28,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:08:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 235 transitions. [2021-01-07 05:08:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-07 05:08:28,769 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:28,769 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:28,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:08:28,983 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:28,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1283478130, now seen corresponding path program 1 times [2021-01-07 05:08:28,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:28,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498969837] [2021-01-07 05:08:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:08:29,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498969837] [2021-01-07 05:08:29,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537292783] [2021-01-07 05:08:29,293 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 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 05:08:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:29,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:08:29,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:08:29,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:29,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-07 05:08:29,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986351875] [2021-01-07 05:08:29,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:08:29,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:29,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:08:29,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:08:29,505 INFO L87 Difference]: Start difference. First operand 215 states and 235 transitions. Second operand 22 states. [2021-01-07 05:08:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:29,947 INFO L93 Difference]: Finished difference Result 398 states and 418 transitions. [2021-01-07 05:08:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:08:29,947 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2021-01-07 05:08:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:29,949 INFO L225 Difference]: With dead ends: 398 [2021-01-07 05:08:29,949 INFO L226 Difference]: Without dead ends: 398 [2021-01-07 05:08:29,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:08:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-01-07 05:08:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 219. [2021-01-07 05:08:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-01-07 05:08:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 239 transitions. [2021-01-07 05:08:29,955 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 239 transitions. Word has length 98 [2021-01-07 05:08:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:29,956 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 239 transitions. [2021-01-07 05:08:29,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:08:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 239 transitions. [2021-01-07 05:08:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-07 05:08:29,957 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:29,957 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:30,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:08:30,171 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:30,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1839372591, now seen corresponding path program 2 times [2021-01-07 05:08:30,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18294015] [2021-01-07 05:08:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:08:30,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18294015] [2021-01-07 05:08:30,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170052858] [2021-01-07 05:08:30,514 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 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 05:08:30,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:30,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:30,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:08:30,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:08:30,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:30,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-07 05:08:30,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966118235] [2021-01-07 05:08:30,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:08:30,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:08:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:08:30,720 INFO L87 Difference]: Start difference. First operand 219 states and 239 transitions. Second operand 23 states. [2021-01-07 05:08:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:31,245 INFO L93 Difference]: Finished difference Result 419 states and 440 transitions. [2021-01-07 05:08:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:08:31,245 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2021-01-07 05:08:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:31,247 INFO L225 Difference]: With dead ends: 419 [2021-01-07 05:08:31,248 INFO L226 Difference]: Without dead ends: 419 [2021-01-07 05:08:31,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 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 05:08:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-01-07 05:08:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 223. [2021-01-07 05:08:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-01-07 05:08:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 243 transitions. [2021-01-07 05:08:31,254 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 243 transitions. Word has length 102 [2021-01-07 05:08:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:31,254 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 243 transitions. [2021-01-07 05:08:31,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:08:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 243 transitions. [2021-01-07 05:08:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-07 05:08:31,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:31,255 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:31,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:31,469 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash -312031596, now seen corresponding path program 3 times [2021-01-07 05:08:31,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:31,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604424179] [2021-01-07 05:08:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:08:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604424179] [2021-01-07 05:08:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649916103] [2021-01-07 05:08:31,809 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 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 05:08:31,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:08:31,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:08:31,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:32,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:08:32,044 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:32,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:32,046 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 05:08:32,046 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2021-01-07 05:08:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-01-07 05:08:32,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:32,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 29 [2021-01-07 05:08:32,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534605605] [2021-01-07 05:08:32,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:08:32,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:32,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:08:32,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=483, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:08:32,081 INFO L87 Difference]: Start difference. First operand 223 states and 243 transitions. Second operand 29 states. [2021-01-07 05:08:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:32,723 INFO L93 Difference]: Finished difference Result 449 states and 470 transitions. [2021-01-07 05:08:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:08:32,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 106 [2021-01-07 05:08:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:32,726 INFO L225 Difference]: With dead ends: 449 [2021-01-07 05:08:32,726 INFO L226 Difference]: Without dead ends: 439 [2021-01-07 05:08:32,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=551, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:08:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-01-07 05:08:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 227. [2021-01-07 05:08:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-01-07 05:08:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 246 transitions. [2021-01-07 05:08:32,733 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 246 transitions. Word has length 106 [2021-01-07 05:08:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:32,733 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 246 transitions. [2021-01-07 05:08:32,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:08:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 246 transitions. [2021-01-07 05:08:32,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-01-07 05:08:32,734 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:32,734 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:32,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:08:32,948 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1189609704, now seen corresponding path program 4 times [2021-01-07 05:08:32,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:32,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646888653] [2021-01-07 05:08:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:08:33,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646888653] [2021-01-07 05:08:33,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330493552] [2021-01-07 05:08:33,321 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 05:08:33,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:33,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:33,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:08:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:33,507 INFO L348 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-01-07 05:08:33,508 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 05:08:33,508 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:33,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:33,511 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:33,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2021-01-07 05:08:33,638 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:33,639 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 05:08:33,640 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:33,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:33,642 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 05:08:33,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2021-01-07 05:08:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-01-07 05:08:33,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:33,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 33 [2021-01-07 05:08:33,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214959476] [2021-01-07 05:08:33,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:08:33,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:33,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:08:33,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=627, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:08:33,705 INFO L87 Difference]: Start difference. First operand 227 states and 246 transitions. Second operand 33 states. [2021-01-07 05:08:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:35,276 INFO L93 Difference]: Finished difference Result 675 states and 697 transitions. [2021-01-07 05:08:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-07 05:08:35,277 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 115 [2021-01-07 05:08:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:35,283 INFO L225 Difference]: With dead ends: 675 [2021-01-07 05:08:35,283 INFO L226 Difference]: Without dead ends: 675 [2021-01-07 05:08:35,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1239, Invalid=2183, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:08:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-01-07 05:08:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 245. [2021-01-07 05:08:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-01-07 05:08:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-01-07 05:08:35,300 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 115 [2021-01-07 05:08:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:35,301 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-01-07 05:08:35,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:08:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-01-07 05:08:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-01-07 05:08:35,302 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:35,302 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:35,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:35,515 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1635851654, now seen corresponding path program 5 times [2021-01-07 05:08:35,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:35,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247246953] [2021-01-07 05:08:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-07 05:08:35,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247246953] [2021-01-07 05:08:35,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418380720] [2021-01-07 05:08:35,941 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 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 05:08:37,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-01-07 05:08:37,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:37,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:08:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-07 05:08:37,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:37,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-07 05:08:37,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454784625] [2021-01-07 05:08:37,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:08:37,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:08:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:37,330 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 26 states. [2021-01-07 05:08:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:37,982 INFO L93 Difference]: Finished difference Result 494 states and 517 transitions. [2021-01-07 05:08:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:08:37,982 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 124 [2021-01-07 05:08:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:37,985 INFO L225 Difference]: With dead ends: 494 [2021-01-07 05:08:37,985 INFO L226 Difference]: Without dead ends: 494 [2021-01-07 05:08:37,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-01-07 05:08:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 249. [2021-01-07 05:08:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2021-01-07 05:08:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2021-01-07 05:08:38,002 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 124 [2021-01-07 05:08:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:38,003 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2021-01-07 05:08:38,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:08:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2021-01-07 05:08:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-01-07 05:08:38,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:38,004 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:38,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:08:38,217 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:38,218 INFO L82 PathProgramCache]: Analyzing trace with hash 141475325, now seen corresponding path program 6 times [2021-01-07 05:08:38,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:38,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397893072] [2021-01-07 05:08:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-07 05:08:38,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397893072] [2021-01-07 05:08:38,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840381374] [2021-01-07 05:08:38,707 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 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 05:08:38,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-07 05:08:38,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-07 05:08:38,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:38,957 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 1=[|v_#valid_31|]} [2021-01-07 05:08:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:38,964 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 05:08:38,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:38,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:38,980 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 05:08:38,982 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:38,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:38,992 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:38,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:08:39,137 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 05:08:39,139 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,146 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:39,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,147 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:18 [2021-01-07 05:08:39,318 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 05:08:39,320 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:39,340 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:08:39,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:39,443 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 05:08:39,445 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:39,463 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,463 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2021-01-07 05:08:40,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:40,226 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:40,227 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 78 [2021-01-07 05:08:40,231 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-07 05:08:40,232 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:40,233 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-07 05:08:40,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:40,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:40,261 INFO L625 ElimStorePlain]: treesize reduction 17, result has 60.5 percent of original size [2021-01-07 05:08:40,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:40,264 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:82, output treesize:8 [2021-01-07 05:08:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2021-01-07 05:08:40,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:40,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2021-01-07 05:08:40,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789944190] [2021-01-07 05:08:40,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-07 05:08:40,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:40,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-07 05:08:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1502, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:08:40,486 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 48 states. [2021-01-07 05:08:43,594 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-01-07 05:08:44,218 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-01-07 05:08:44,631 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-01-07 05:08:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:48,739 INFO L93 Difference]: Finished difference Result 728 states and 791 transitions. [2021-01-07 05:08:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-01-07 05:08:48,740 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 128 [2021-01-07 05:08:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:48,743 INFO L225 Difference]: With dead ends: 728 [2021-01-07 05:08:48,744 INFO L226 Difference]: Without dead ends: 728 [2021-01-07 05:08:48,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=5036, Invalid=11994, Unknown=0, NotChecked=0, Total=17030 [2021-01-07 05:08:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-01-07 05:08:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 257. [2021-01-07 05:08:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-07 05:08:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 276 transitions. [2021-01-07 05:08:48,755 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 276 transitions. Word has length 128 [2021-01-07 05:08:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:48,756 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 276 transitions. [2021-01-07 05:08:48,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-01-07 05:08:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 276 transitions. [2021-01-07 05:08:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-01-07 05:08:48,757 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:48,757 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:48,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:08:48,972 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:48,973 INFO L82 PathProgramCache]: Analyzing trace with hash -659990870, now seen corresponding path program 7 times [2021-01-07 05:08:48,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:48,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247103720] [2021-01-07 05:08:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:49,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247103720] [2021-01-07 05:08:49,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760918798] [2021-01-07 05:08:49,547 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 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 05:08:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:08:49,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1253 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:49,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:49,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-01-07 05:08:49,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220068914] [2021-01-07 05:08:49,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:08:49,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:08:49,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:08:49,841 INFO L87 Difference]: Start difference. First operand 257 states and 276 transitions. Second operand 29 states. [2021-01-07 05:08:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:50,561 INFO L93 Difference]: Finished difference Result 557 states and 583 transitions. [2021-01-07 05:08:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:08:50,561 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 138 [2021-01-07 05:08:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:50,563 INFO L225 Difference]: With dead ends: 557 [2021-01-07 05:08:50,563 INFO L226 Difference]: Without dead ends: 557 [2021-01-07 05:08:50,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 138 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 05:08:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-01-07 05:08:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 261. [2021-01-07 05:08:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-01-07 05:08:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 280 transitions. [2021-01-07 05:08:50,571 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 280 transitions. Word has length 138 [2021-01-07 05:08:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:50,572 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 280 transitions. [2021-01-07 05:08:50,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:08:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 280 transitions. [2021-01-07 05:08:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-01-07 05:08:50,573 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:50,573 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:50,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:50,788 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1669681389, now seen corresponding path program 8 times [2021-01-07 05:08:50,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:50,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329954949] [2021-01-07 05:08:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:51,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329954949] [2021-01-07 05:08:51,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231840913] [2021-01-07 05:08:51,349 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 05:08:51,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:51,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:51,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:08:51,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:51,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:51,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-01-07 05:08:51,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135176776] [2021-01-07 05:08:51,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:08:51,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:51,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:08:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:08:51,624 INFO L87 Difference]: Start difference. First operand 261 states and 280 transitions. Second operand 30 states. [2021-01-07 05:08:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:52,391 INFO L93 Difference]: Finished difference Result 578 states and 605 transitions. [2021-01-07 05:08:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-07 05:08:52,392 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 142 [2021-01-07 05:08:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:52,395 INFO L225 Difference]: With dead ends: 578 [2021-01-07 05:08:52,395 INFO L226 Difference]: Without dead ends: 578 [2021-01-07 05:08:52,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:08:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-01-07 05:08:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 265. [2021-01-07 05:08:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2021-01-07 05:08:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 284 transitions. [2021-01-07 05:08:52,402 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 284 transitions. Word has length 142 [2021-01-07 05:08:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:52,402 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 284 transitions. [2021-01-07 05:08:52,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:08:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 284 transitions. [2021-01-07 05:08:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-01-07 05:08:52,403 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:52,403 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:52,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:52,616 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:52,617 INFO L82 PathProgramCache]: Analyzing trace with hash -813403728, now seen corresponding path program 9 times [2021-01-07 05:08:52,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:52,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163702374] [2021-01-07 05:08:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:53,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163702374] [2021-01-07 05:08:53,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781904886] [2021-01-07 05:08:53,212 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 05:08:53,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:08:53,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:53,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:08:53,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:53,508 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:08:53,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:53,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:53,511 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 05:08:53,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2021-01-07 05:08:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-01-07 05:08:53,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:53,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 11] total 38 [2021-01-07 05:08:53,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476979760] [2021-01-07 05:08:53,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:08:53,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:08:53,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=816, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:08:53,558 INFO L87 Difference]: Start difference. First operand 265 states and 284 transitions. Second operand 38 states. [2021-01-07 05:08:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:54,604 INFO L93 Difference]: Finished difference Result 615 states and 642 transitions. [2021-01-07 05:08:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:08:54,605 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2021-01-07 05:08:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:54,608 INFO L225 Difference]: With dead ends: 615 [2021-01-07 05:08:54,608 INFO L226 Difference]: Without dead ends: 598 [2021-01-07 05:08:54,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=652, Invalid=908, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:08:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-01-07 05:08:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 269. [2021-01-07 05:08:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-01-07 05:08:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 287 transitions. [2021-01-07 05:08:54,620 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 287 transitions. Word has length 146 [2021-01-07 05:08:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:54,620 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 287 transitions. [2021-01-07 05:08:54,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:08:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 287 transitions. [2021-01-07 05:08:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-01-07 05:08:54,622 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:54,622 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:54,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:08:54,835 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:54,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1109523459, now seen corresponding path program 10 times [2021-01-07 05:08:54,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:54,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693620701] [2021-01-07 05:08:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-07 05:08:55,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693620701] [2021-01-07 05:08:55,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161833833] [2021-01-07 05:08:55,438 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 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 05:08:56,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:56,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:56,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:08:56,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-07 05:08:56,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-01-07 05:08:56,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681692052] [2021-01-07 05:08:56,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:08:56,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:08:56,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:08:56,494 INFO L87 Difference]: Start difference. First operand 269 states and 287 transitions. Second operand 32 states. [2021-01-07 05:08:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:57,323 INFO L93 Difference]: Finished difference Result 619 states and 647 transitions. [2021-01-07 05:08:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:08:57,324 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 153 [2021-01-07 05:08:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:57,327 INFO L225 Difference]: With dead ends: 619 [2021-01-07 05:08:57,327 INFO L226 Difference]: Without dead ends: 619 [2021-01-07 05:08:57,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:08:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-01-07 05:08:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 273. [2021-01-07 05:08:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-01-07 05:08:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2021-01-07 05:08:57,334 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 153 [2021-01-07 05:08:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:57,335 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2021-01-07 05:08:57,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:08:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2021-01-07 05:08:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-07 05:08:57,336 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:57,336 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:57,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:57,550 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1044393120, now seen corresponding path program 11 times [2021-01-07 05:08:57,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:57,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868271704] [2021-01-07 05:08:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-07 05:08:58,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868271704] [2021-01-07 05:08:58,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845914460] [2021-01-07 05:08:58,170 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 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 05:09:00,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-07 05:09:00,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:00,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-07 05:09:00,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-07 05:09:00,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:00,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-01-07 05:09:00,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438839105] [2021-01-07 05:09:00,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:09:00,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:00,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:09:00,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:09:00,299 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand 33 states. [2021-01-07 05:09:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:01,175 INFO L93 Difference]: Finished difference Result 640 states and 669 transitions. [2021-01-07 05:09:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:09:01,175 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 157 [2021-01-07 05:09:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:01,179 INFO L225 Difference]: With dead ends: 640 [2021-01-07 05:09:01,179 INFO L226 Difference]: Without dead ends: 640 [2021-01-07 05:09:01,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:09:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-01-07 05:09:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 277. [2021-01-07 05:09:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-01-07 05:09:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2021-01-07 05:09:01,187 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 157 [2021-01-07 05:09:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:01,187 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2021-01-07 05:09:01,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:09:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2021-01-07 05:09:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-07 05:09:01,188 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:01,188 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:01,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:09:01,402 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:01,403 INFO L82 PathProgramCache]: Analyzing trace with hash 95990845, now seen corresponding path program 12 times [2021-01-07 05:09:01,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:01,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505382787] [2021-01-07 05:09:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1814 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-07 05:09:02,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505382787] [2021-01-07 05:09:02,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658799921] [2021-01-07 05:09:02,145 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 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 05:09:02,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:09:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:02,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:09:02,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:02,400 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 05:09:02,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,407 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,408 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:09:02,612 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 05:09:02,613 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,624 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:09:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:09:02,695 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 05:09:02,696 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,710 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 05:09:02,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2021-01-07 05:09:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:09:02,780 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 05:09:02,781 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,796 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 05:09:02,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2021-01-07 05:09:02,954 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 05:09:02,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,961 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 05:09:02,961 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:09:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1814 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-01-07 05:09:03,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:03,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2021-01-07 05:09:03,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319976172] [2021-01-07 05:09:03,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:09:03,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:03,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:09:03,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1283, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:09:03,156 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 46 states. [2021-01-07 05:09:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:07,031 INFO L93 Difference]: Finished difference Result 659 states and 689 transitions. [2021-01-07 05:09:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-01-07 05:09:07,031 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 161 [2021-01-07 05:09:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:07,035 INFO L225 Difference]: With dead ends: 659 [2021-01-07 05:09:07,035 INFO L226 Difference]: Without dead ends: 659 [2021-01-07 05:09:07,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3713, Invalid=8277, Unknown=0, NotChecked=0, Total=11990 [2021-01-07 05:09:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-01-07 05:09:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 267. [2021-01-07 05:09:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-01-07 05:09:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 284 transitions. [2021-01-07 05:09:07,044 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 284 transitions. Word has length 161 [2021-01-07 05:09:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:07,044 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 284 transitions. [2021-01-07 05:09:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:09:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 284 transitions. [2021-01-07 05:09:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-01-07 05:09:07,045 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:07,045 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:07,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:09:07,261 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1368343297, now seen corresponding path program 13 times [2021-01-07 05:09:07,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:07,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875131365] [2021-01-07 05:09:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:09:07,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875131365] [2021-01-07 05:09:07,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598275027] [2021-01-07 05:09:07,956 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 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 05:09:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:08,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:09:08,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:09:08,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:08,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-01-07 05:09:08,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867031761] [2021-01-07 05:09:08,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:09:08,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:08,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:09:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:09:08,280 INFO L87 Difference]: Start difference. First operand 267 states and 284 transitions. Second operand 35 states. [2021-01-07 05:09:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:09,210 INFO L93 Difference]: Finished difference Result 667 states and 698 transitions. [2021-01-07 05:09:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:09:09,210 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 167 [2021-01-07 05:09:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:09,213 INFO L225 Difference]: With dead ends: 667 [2021-01-07 05:09:09,213 INFO L226 Difference]: Without dead ends: 667 [2021-01-07 05:09:09,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:09:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-01-07 05:09:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 271. [2021-01-07 05:09:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2021-01-07 05:09:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 288 transitions. [2021-01-07 05:09:09,219 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 288 transitions. Word has length 167 [2021-01-07 05:09:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:09,219 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 288 transitions. [2021-01-07 05:09:09,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:09:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 288 transitions. [2021-01-07 05:09:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-01-07 05:09:09,220 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:09,220 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:09,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:09:09,436 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1520536674, now seen corresponding path program 14 times [2021-01-07 05:09:09,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:09,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273068059] [2021-01-07 05:09:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:09:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273068059] [2021-01-07 05:09:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486620254] [2021-01-07 05:09:10,243 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 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 05:09:10,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:10,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:10,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:09:10,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:09:10,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:10,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-01-07 05:09:10,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084363021] [2021-01-07 05:09:10,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:09:10,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:10,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:09:10,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:09:10,563 INFO L87 Difference]: Start difference. First operand 271 states and 288 transitions. Second operand 36 states. [2021-01-07 05:09:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:11,532 INFO L93 Difference]: Finished difference Result 688 states and 720 transitions. [2021-01-07 05:09:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:09:11,533 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 171 [2021-01-07 05:09:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:11,536 INFO L225 Difference]: With dead ends: 688 [2021-01-07 05:09:11,536 INFO L226 Difference]: Without dead ends: 688 [2021-01-07 05:09:11,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 171 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 05:09:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-01-07 05:09:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 275. [2021-01-07 05:09:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-01-07 05:09:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 292 transitions. [2021-01-07 05:09:11,543 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 292 transitions. Word has length 171 [2021-01-07 05:09:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:11,543 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 292 transitions. [2021-01-07 05:09:11,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:09:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 292 transitions. [2021-01-07 05:09:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-01-07 05:09:11,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:11,545 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:11,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:09:11,758 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash 649727419, now seen corresponding path program 15 times [2021-01-07 05:09:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:11,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083515252] [2021-01-07 05:09:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 05:09:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083515252] [2021-01-07 05:09:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108763862] [2021-01-07 05:09:12,619 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 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 05:09:12,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:09:12,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:12,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:09:12,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:12,719 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 05:09:12,721 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:12,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:12,723 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:12,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2021-01-07 05:09:12,901 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 19 treesize of output 19 [2021-01-07 05:09:12,902 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:12,907 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:12,908 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:12,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2021-01-07 05:09:13,095 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 34 treesize of output 10 [2021-01-07 05:09:13,096 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:13,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:13,101 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 05:09:13,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:3 [2021-01-07 05:09:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2021-01-07 05:09:13,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:13,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 15] total 49 [2021-01-07 05:09:13,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224837845] [2021-01-07 05:09:13,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:09:13,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:13,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:09:13,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=1382, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:09:13,221 INFO L87 Difference]: Start difference. First operand 275 states and 292 transitions. Second operand 49 states. [2021-01-07 05:09:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:17,202 INFO L93 Difference]: Finished difference Result 1042 states and 1075 transitions. [2021-01-07 05:09:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-01-07 05:09:17,202 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 175 [2021-01-07 05:09:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:17,205 INFO L225 Difference]: With dead ends: 1042 [2021-01-07 05:09:17,205 INFO L226 Difference]: Without dead ends: 1042 [2021-01-07 05:09:17,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3839 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4592, Invalid=8980, Unknown=0, NotChecked=0, Total=13572 [2021-01-07 05:09:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-01-07 05:09:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 300. [2021-01-07 05:09:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2021-01-07 05:09:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 317 transitions. [2021-01-07 05:09:17,215 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 317 transitions. Word has length 175 [2021-01-07 05:09:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:17,216 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 317 transitions. [2021-01-07 05:09:17,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:09:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 317 transitions. [2021-01-07 05:09:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-01-07 05:09:17,217 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:17,217 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:17,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:09:17,431 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:17,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2091759387, now seen corresponding path program 16 times [2021-01-07 05:09:17,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:17,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319547700] [2021-01-07 05:09:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:09:18,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319547700] [2021-01-07 05:09:18,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148645891] [2021-01-07 05:09:18,423 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 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 05:09:19,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:09:19,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:19,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-07 05:09:19,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:09:19,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:19,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-01-07 05:09:19,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583984970] [2021-01-07 05:09:19,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:09:19,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:19,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:09:19,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:09:19,569 INFO L87 Difference]: Start difference. First operand 300 states and 317 transitions. Second operand 38 states. [2021-01-07 05:09:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:20,613 INFO L93 Difference]: Finished difference Result 750 states and 784 transitions. [2021-01-07 05:09:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-07 05:09:20,613 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 184 [2021-01-07 05:09:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:20,616 INFO L225 Difference]: With dead ends: 750 [2021-01-07 05:09:20,616 INFO L226 Difference]: Without dead ends: 750 [2021-01-07 05:09:20,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:09:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-01-07 05:09:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 304. [2021-01-07 05:09:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2021-01-07 05:09:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 321 transitions. [2021-01-07 05:09:20,621 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 321 transitions. Word has length 184 [2021-01-07 05:09:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:20,621 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 321 transitions. [2021-01-07 05:09:20,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:09:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 321 transitions. [2021-01-07 05:09:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-01-07 05:09:20,623 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:20,623 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:20,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:09:20,838 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1329645032, now seen corresponding path program 17 times [2021-01-07 05:09:20,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:20,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514930778] [2021-01-07 05:09:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2472 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:09:21,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514930778] [2021-01-07 05:09:21,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409511382] [2021-01-07 05:09:21,738 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 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 05:09:44,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-01-07 05:09:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:09:44,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2472 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:09:44,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:44,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-01-07 05:09:44,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638243014] [2021-01-07 05:09:44,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:09:44,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:44,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:09:44,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:09:44,746 INFO L87 Difference]: Start difference. First operand 304 states and 321 transitions. Second operand 39 states. [2021-01-07 05:09:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:45,826 INFO L93 Difference]: Finished difference Result 771 states and 806 transitions. [2021-01-07 05:09:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-07 05:09:45,827 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 188 [2021-01-07 05:09:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:45,829 INFO L225 Difference]: With dead ends: 771 [2021-01-07 05:09:45,829 INFO L226 Difference]: Without dead ends: 771 [2021-01-07 05:09:45,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:09:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-01-07 05:09:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 308. [2021-01-07 05:09:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-01-07 05:09:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-01-07 05:09:45,836 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 188 [2021-01-07 05:09:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:45,837 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-01-07 05:09:45,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:09:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-01-07 05:09:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-01-07 05:09:45,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:45,838 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:46,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:09:46,039 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:46,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:46,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1439893867, now seen corresponding path program 18 times [2021-01-07 05:09:46,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:46,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965463512] [2021-01-07 05:09:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2613 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:09:47,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965463512] [2021-01-07 05:09:47,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591267107] [2021-01-07 05:09:47,046 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 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 05:09:47,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:09:47,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:09:47,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:47,251 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 05:09:47,255 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:47,262 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:09:47,588 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 05:09:47,589 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:47,602 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:09:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:09:47,696 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 05:09:47,697 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:47,712 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 05:09:47,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2021-01-07 05:09:47,937 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 05:09:47,938 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:47,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:47,943 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 05:09:47,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:09:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2613 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2021-01-07 05:09:48,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:48,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 53 [2021-01-07 05:09:48,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145792675] [2021-01-07 05:09:48,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:09:48,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:09:48,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1112, Invalid=1644, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:09:48,125 INFO L87 Difference]: Start difference. First operand 308 states and 325 transitions. Second operand 53 states. [2021-01-07 05:09:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:53,236 INFO L93 Difference]: Finished difference Result 790 states and 826 transitions. [2021-01-07 05:09:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-01-07 05:09:53,236 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 192 [2021-01-07 05:09:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:53,240 INFO L225 Difference]: With dead ends: 790 [2021-01-07 05:09:53,240 INFO L226 Difference]: Without dead ends: 790 [2021-01-07 05:09:53,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4328 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5059, Invalid=10943, Unknown=0, NotChecked=0, Total=16002 [2021-01-07 05:09:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-01-07 05:09:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 291. [2021-01-07 05:09:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-01-07 05:09:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 307 transitions. [2021-01-07 05:09:53,249 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 307 transitions. Word has length 192 [2021-01-07 05:09:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:53,249 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 307 transitions. [2021-01-07 05:09:53,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:09:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 307 transitions. [2021-01-07 05:09:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-01-07 05:09:53,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:53,251 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:53,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:53,465 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2077401255, now seen corresponding path program 19 times [2021-01-07 05:09:53,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:53,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415586249] [2021-01-07 05:09:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-07 05:09:54,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415586249] [2021-01-07 05:09:54,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164014275] [2021-01-07 05:09:54,523 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 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 05:09:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:54,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-07 05:09:54,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-07 05:09:54,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:54,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-01-07 05:09:54,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231268508] [2021-01-07 05:09:54,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:09:54,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:09:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:09:54,898 INFO L87 Difference]: Start difference. First operand 291 states and 307 transitions. Second operand 41 states. [2021-01-07 05:09:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:56,077 INFO L93 Difference]: Finished difference Result 791 states and 828 transitions. [2021-01-07 05:09:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:09:56,078 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 198 [2021-01-07 05:09:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:56,080 INFO L225 Difference]: With dead ends: 791 [2021-01-07 05:09:56,080 INFO L226 Difference]: Without dead ends: 791 [2021-01-07 05:09:56,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:09:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-01-07 05:09:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 295. [2021-01-07 05:09:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-01-07 05:09:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 311 transitions. [2021-01-07 05:09:56,087 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 311 transitions. Word has length 198 [2021-01-07 05:09:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:56,087 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 311 transitions. [2021-01-07 05:09:56,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:09:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 311 transitions. [2021-01-07 05:09:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-07 05:09:56,089 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:56,089 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:56,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:56,303 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash -4940694, now seen corresponding path program 20 times [2021-01-07 05:09:56,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:56,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515640847] [2021-01-07 05:09:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2910 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-07 05:09:57,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515640847] [2021-01-07 05:09:57,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211243111] [2021-01-07 05:09:57,355 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 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 05:09:57,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:57,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:57,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:09:57,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2910 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-07 05:09:57,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:57,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-01-07 05:09:57,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077863922] [2021-01-07 05:09:57,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-07 05:09:57,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:57,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-07 05:09:57,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:09:57,746 INFO L87 Difference]: Start difference. First operand 295 states and 311 transitions. Second operand 42 states. [2021-01-07 05:09:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:58,996 INFO L93 Difference]: Finished difference Result 812 states and 850 transitions. [2021-01-07 05:09:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-07 05:09:58,997 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 202 [2021-01-07 05:09:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:58,999 INFO L225 Difference]: With dead ends: 812 [2021-01-07 05:09:58,999 INFO L226 Difference]: Without dead ends: 812 [2021-01-07 05:09:59,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:09:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-01-07 05:09:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 299. [2021-01-07 05:09:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2021-01-07 05:09:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 315 transitions. [2021-01-07 05:09:59,013 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 315 transitions. Word has length 202 [2021-01-07 05:09:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:59,015 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 315 transitions. [2021-01-07 05:09:59,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-07 05:09:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 315 transitions. [2021-01-07 05:09:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-01-07 05:09:59,017 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:59,017 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:09:59,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:59,232 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2032337235, now seen corresponding path program 21 times [2021-01-07 05:09:59,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:59,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541966782] [2021-01-07 05:09:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3063 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-07 05:10:00,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541966782] [2021-01-07 05:10:00,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129060990] [2021-01-07 05:10:00,349 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 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 05:10:00,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:10:00,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:00,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:10:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:00,757 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 05:10:00,758 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:00,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:00,760 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 05:10:00,760 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2021-01-07 05:10:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3063 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2021-01-07 05:10:00,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:00,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 13] total 52 [2021-01-07 05:10:00,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635356173] [2021-01-07 05:10:00,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-07 05:10:00,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:00,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-07 05:10:00,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=1496, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:10:00,845 INFO L87 Difference]: Start difference. First operand 299 states and 315 transitions. Second operand 52 states. [2021-01-07 05:10:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:02,445 INFO L93 Difference]: Finished difference Result 856 states and 894 transitions. [2021-01-07 05:10:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-07 05:10:02,445 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 206 [2021-01-07 05:10:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:02,450 INFO L225 Difference]: With dead ends: 856 [2021-01-07 05:10:02,450 INFO L226 Difference]: Without dead ends: 832 [2021-01-07 05:10:02,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1240, Invalid=1622, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:10:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-01-07 05:10:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 303. [2021-01-07 05:10:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-01-07 05:10:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 318 transitions. [2021-01-07 05:10:02,458 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 318 transitions. Word has length 206 [2021-01-07 05:10:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:02,458 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 318 transitions. [2021-01-07 05:10:02,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-07 05:10:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 318 transitions. [2021-01-07 05:10:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-01-07 05:10:02,459 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:02,460 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:02,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-07 05:10:02,674 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:02,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1563073631, now seen corresponding path program 22 times [2021-01-07 05:10:02,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:02,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090622197] [2021-01-07 05:10:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-01-07 05:10:03,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090622197] [2021-01-07 05:10:03,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133335844] [2021-01-07 05:10:03,899 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:04,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:10:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:04,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:10:04,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:04,233 INFO L348 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-01-07 05:10:04,234 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 05:10:04,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:04,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:04,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:04,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2021-01-07 05:10:04,467 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:04,468 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 05:10:04,469 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:04,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:04,471 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 05:10:04,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2021-01-07 05:10:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2021-01-07 05:10:04,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:04,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 16] total 56 [2021-01-07 05:10:04,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431233281] [2021-01-07 05:10:04,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-01-07 05:10:04,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-01-07 05:10:04,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=1748, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:10:04,629 INFO L87 Difference]: Start difference. First operand 303 states and 318 transitions. Second operand 56 states. [2021-01-07 05:10:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:08,309 INFO L93 Difference]: Finished difference Result 1254 states and 1293 transitions. [2021-01-07 05:10:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-01-07 05:10:08,309 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 215 [2021-01-07 05:10:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:08,313 INFO L225 Difference]: With dead ends: 1254 [2021-01-07 05:10:08,313 INFO L226 Difference]: Without dead ends: 1254 [2021-01-07 05:10:08,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3575, Invalid=6325, Unknown=0, NotChecked=0, Total=9900 [2021-01-07 05:10:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-01-07 05:10:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 335. [2021-01-07 05:10:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2021-01-07 05:10:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 350 transitions. [2021-01-07 05:10:08,322 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 350 transitions. Word has length 215 [2021-01-07 05:10:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:08,323 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 350 transitions. [2021-01-07 05:10:08,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-01-07 05:10:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 350 transitions. [2021-01-07 05:10:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-01-07 05:10:08,324 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:08,324 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2021-01-07 05:10:08,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:08,538 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash 868122504, now seen corresponding path program 4 times [2021-01-07 05:10:08,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:08,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936441862] [2021-01-07 05:10:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3607 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-01-07 05:10:09,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936441862] [2021-01-07 05:10:09,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959907513] [2021-01-07 05:10:09,794 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:15,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:10:15,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:15,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:10:15,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3607 backedges. 242 proven. 1654 refuted. 0 times theorem prover too weak. 1711 trivial. 0 not checked. [2021-01-07 05:10:17,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:17,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 27] total 70 [2021-01-07 05:10:17,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872206992] [2021-01-07 05:10:17,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-01-07 05:10:17,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:17,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-01-07 05:10:17,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1557, Invalid=3273, Unknown=0, NotChecked=0, Total=4830 [2021-01-07 05:10:17,078 INFO L87 Difference]: Start difference. First operand 335 states and 350 transitions. Second operand 70 states. [2021-01-07 05:10:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:22,203 INFO L93 Difference]: Finished difference Result 900 states and 940 transitions. [2021-01-07 05:10:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:10:22,204 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 224 [2021-01-07 05:10:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:22,208 INFO L225 Difference]: With dead ends: 900 [2021-01-07 05:10:22,208 INFO L226 Difference]: Without dead ends: 900 [2021-01-07 05:10:22,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3596, Invalid=9286, Unknown=0, NotChecked=0, Total=12882 [2021-01-07 05:10:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-01-07 05:10:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 351. [2021-01-07 05:10:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2021-01-07 05:10:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 368 transitions. [2021-01-07 05:10:22,214 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 368 transitions. Word has length 224 [2021-01-07 05:10:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:22,215 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 368 transitions. [2021-01-07 05:10:22,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2021-01-07 05:10:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 368 transitions. [2021-01-07 05:10:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-01-07 05:10:22,216 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:22,216 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:10:22,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:22,431 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:22,432 INFO L82 PathProgramCache]: Analyzing trace with hash 808499798, now seen corresponding path program 23 times [2021-01-07 05:10:22,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:22,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073718800] [2021-01-07 05:10:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-01-07 05:10:23,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073718800] [2021-01-07 05:10:23,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196410401] [2021-01-07 05:10:23,829 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:13,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-01-07 05:11:13,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:11:13,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-07 05:11:13,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-01-07 05:11:14,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:14,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-01-07 05:11:14,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386899131] [2021-01-07 05:11:14,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:11:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:14,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:11:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:11:14,136 INFO L87 Difference]: Start difference. First operand 351 states and 368 transitions. Second operand 46 states. [2021-01-07 05:11:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:15,537 INFO L93 Difference]: Finished difference Result 920 states and 961 transitions. [2021-01-07 05:11:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-07 05:11:15,538 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 228 [2021-01-07 05:11:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:15,541 INFO L225 Difference]: With dead ends: 920 [2021-01-07 05:11:15,541 INFO L226 Difference]: Without dead ends: 920 [2021-01-07 05:11:15,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:11:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-01-07 05:11:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 355. [2021-01-07 05:11:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2021-01-07 05:11:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 372 transitions. [2021-01-07 05:11:15,548 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 372 transitions. Word has length 228 [2021-01-07 05:11:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:15,548 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 372 transitions. [2021-01-07 05:11:15,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:11:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 372 transitions. [2021-01-07 05:11:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-07 05:11:15,550 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:15,550 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:15,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-07 05:11:15,765 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1644560679, now seen corresponding path program 24 times [2021-01-07 05:11:15,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:15,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505788249] [2021-01-07 05:11:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3754 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-01-07 05:11:17,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505788249] [2021-01-07 05:11:17,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761646135] [2021-01-07 05:11:17,228 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:17,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-07 05:11:17,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:11:17,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:11:17,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:17,677 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 05:11:17,679 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:17,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:17,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:17,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:11:18,091 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 05:11:18,093 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:18,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:18,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:18,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:11:18,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:11:18,212 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 05:11:18,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:18,228 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:18,231 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 05:11:18,231 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2021-01-07 05:11:18,532 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 05:11:18,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:18,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:18,540 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 05:11:18,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 05:11:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3754 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2021-01-07 05:11:18,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:18,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 18] total 62 [2021-01-07 05:11:18,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989700072] [2021-01-07 05:11:18,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-01-07 05:11:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:18,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-01-07 05:11:18,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1556, Invalid=2226, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:11:18,800 INFO L87 Difference]: Start difference. First operand 355 states and 372 transitions. Second operand 62 states. [2021-01-07 05:11:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:25,578 INFO L93 Difference]: Finished difference Result 939 states and 981 transitions. [2021-01-07 05:11:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-01-07 05:11:25,578 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2021-01-07 05:11:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:25,582 INFO L225 Difference]: With dead ends: 939 [2021-01-07 05:11:25,582 INFO L226 Difference]: Without dead ends: 939 [2021-01-07 05:11:25,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5967 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6870, Invalid=14886, Unknown=0, NotChecked=0, Total=21756 [2021-01-07 05:11:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-01-07 05:11:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 331. [2021-01-07 05:11:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2021-01-07 05:11:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 347 transitions. [2021-01-07 05:11:25,589 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 347 transitions. Word has length 232 [2021-01-07 05:11:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:25,589 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 347 transitions. [2021-01-07 05:11:25,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2021-01-07 05:11:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 347 transitions. [2021-01-07 05:11:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-01-07 05:11:25,591 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:25,591 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:25,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-07 05:11:25,805 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:25,806 INFO L82 PathProgramCache]: Analyzing trace with hash -872213117, now seen corresponding path program 25 times [2021-01-07 05:11:25,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:25,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86831183] [2021-01-07 05:11:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3932 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-07 05:11:27,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86831183] [2021-01-07 05:11:27,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067408318] [2021-01-07 05:11:27,351 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:27,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:11:27,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3932 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-07 05:11:27,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:27,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-01-07 05:11:27,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929228280] [2021-01-07 05:11:27,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-07 05:11:27,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:27,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-07 05:11:27,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:11:27,812 INFO L87 Difference]: Start difference. First operand 331 states and 347 transitions. Second operand 48 states. [2021-01-07 05:11:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:29,360 INFO L93 Difference]: Finished difference Result 933 states and 976 transitions. [2021-01-07 05:11:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-07 05:11:29,361 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 238 [2021-01-07 05:11:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:29,364 INFO L225 Difference]: With dead ends: 933 [2021-01-07 05:11:29,364 INFO L226 Difference]: Without dead ends: 933 [2021-01-07 05:11:29,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:11:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-01-07 05:11:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 335. [2021-01-07 05:11:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2021-01-07 05:11:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 351 transitions. [2021-01-07 05:11:29,369 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 351 transitions. Word has length 238 [2021-01-07 05:11:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:29,370 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 351 transitions. [2021-01-07 05:11:29,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-01-07 05:11:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 351 transitions. [2021-01-07 05:11:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-01-07 05:11:29,371 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:29,371 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:29,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-07 05:11:29,585 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:29,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1125044806, now seen corresponding path program 26 times [2021-01-07 05:11:29,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:29,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578325019] [2021-01-07 05:11:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4109 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-07 05:11:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578325019] [2021-01-07 05:11:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726390325] [2021-01-07 05:11:31,109 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:31,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:11:31,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:11:31,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-07 05:11:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4109 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-07 05:11:31,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:31,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-01-07 05:11:31,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339275796] [2021-01-07 05:11:31,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:11:31,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:11:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:11:31,568 INFO L87 Difference]: Start difference. First operand 335 states and 351 transitions. Second operand 49 states. [2021-01-07 05:11:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:33,231 INFO L93 Difference]: Finished difference Result 954 states and 998 transitions. [2021-01-07 05:11:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-07 05:11:33,231 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 242 [2021-01-07 05:11:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:33,234 INFO L225 Difference]: With dead ends: 954 [2021-01-07 05:11:33,234 INFO L226 Difference]: Without dead ends: 954 [2021-01-07 05:11:33,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:11:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-01-07 05:11:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 339. [2021-01-07 05:11:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2021-01-07 05:11:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 355 transitions. [2021-01-07 05:11:33,239 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 355 transitions. Word has length 242 [2021-01-07 05:11:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:33,239 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 355 transitions. [2021-01-07 05:11:33,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:11:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 355 transitions. [2021-01-07 05:11:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-01-07 05:11:33,240 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:33,240 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:33,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:33,441 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:33,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1600621175, now seen corresponding path program 27 times [2021-01-07 05:11:33,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:33,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414494558] [2021-01-07 05:11:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-07 05:11:35,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414494558] [2021-01-07 05:11:35,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726414485] [2021-01-07 05:11:35,137 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:35,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-07 05:11:35,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:11:35,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:11:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:35,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:11:35,856 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:35,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:35,858 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 05:11:35,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2021-01-07 05:11:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 16 proven. 88 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2021-01-07 05:11:35,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:11:35,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-01-07 05:11:35,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918958848] [2021-01-07 05:11:35,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-07 05:11:35,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-07 05:11:35,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1676, Invalid=2230, Unknown=0, NotChecked=0, Total=3906 [2021-01-07 05:11:35,984 INFO L87 Difference]: Start difference. First operand 339 states and 355 transitions. Second operand 63 states. [2021-01-07 05:11:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:40,067 INFO L93 Difference]: Finished difference Result 1005 states and 1049 transitions. [2021-01-07 05:11:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-07 05:11:40,068 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2021-01-07 05:11:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:40,071 INFO L225 Difference]: With dead ends: 1005 [2021-01-07 05:11:40,071 INFO L226 Difference]: Without dead ends: 974 [2021-01-07 05:11:40,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2645 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4168, Invalid=7174, Unknown=0, NotChecked=0, Total=11342 [2021-01-07 05:11:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-01-07 05:11:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 343. [2021-01-07 05:11:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2021-01-07 05:11:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 358 transitions. [2021-01-07 05:11:40,078 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 358 transitions. Word has length 246 [2021-01-07 05:11:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:40,079 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 358 transitions. [2021-01-07 05:11:40,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2021-01-07 05:11:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 358 transitions. [2021-01-07 05:11:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-01-07 05:11:40,080 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:40,080 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2021-01-07 05:11:40,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:40,295 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:11:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1107208641, now seen corresponding path program 5 times [2021-01-07 05:11:40,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:40,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856916320] [2021-01-07 05:11:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4713 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-01-07 05:11:41,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856916320] [2021-01-07 05:11:41,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093447825] [2021-01-07 05:11:41,986 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true