/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/sanfoundry_24-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:06:34,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:06:34,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:06:35,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:06:35,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:06:35,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:06:35,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:06:35,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:06:35,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:06:35,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:06:35,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:06:35,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:06:35,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:06:35,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:06:35,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:06:35,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:06:35,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:06:35,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:06:35,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:06:35,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:06:35,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:06:35,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:06:35,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:06:35,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:06:35,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:06:35,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:06:35,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:06:35,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:06:35,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:06:35,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:06:35,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:06:35,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:06:35,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:06:35,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:06:35,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:06:35,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:06:35,065 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 05:06:35,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:06:35,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:06:35,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:06:35,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:06:35,096 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:06:35,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:06:35,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:06:35,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:06:35,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:06:35,097 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:06:35,097 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:06:35,097 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:06:35,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:06:35,098 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:06:35,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:06:35,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:06:35,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:06:35,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:06:35,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:06:35,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:06:35,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:06:35,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:06:35,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:06:35,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:06:35,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:06:35,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:06:35,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:06:35,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:06:35,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:06:35,588 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:06:35,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2021-01-07 05:06:35,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a1ee98aae/478c8b8759044669b13d61f8ff7e672f/FLAG62d66c46a [2021-01-07 05:06:36,284 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:06:36,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2021-01-07 05:06:36,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a1ee98aae/478c8b8759044669b13d61f8ff7e672f/FLAG62d66c46a [2021-01-07 05:06:36,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a1ee98aae/478c8b8759044669b13d61f8ff7e672f [2021-01-07 05:06:36,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:06:36,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:06:36,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:06:36,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:06:36,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:06:36,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:36,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71820ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36, skipping insertion in model container [2021-01-07 05:06:36,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:36,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:06:36,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:06:36,863 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/sanfoundry_24-2.i[808,821] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~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 05:06:36,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:06:36,897 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:06:36,917 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/sanfoundry_24-2.i[808,821] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~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,] [2021-01-07 05:06:36,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:06:36,974 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:06:36,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36 WrapperNode [2021-01-07 05:06:36,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:06:36,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:06:36,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:06:36,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:06:36,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:06:37,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:06:37,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:06:37,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:06:37,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (1/1) ... [2021-01-07 05:06:37,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:06:37,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:06:37,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:06:37,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:06:37,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (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 05:06:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:06:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:06:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:06:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:06:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:06:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:06:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:06:37,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:06:37,638 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-07 05:06:37,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:06:37 BoogieIcfgContainer [2021-01-07 05:06:37,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:06:37,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:06:37,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:06:37,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:06:37,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:06:36" (1/3) ... [2021-01-07 05:06:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4a9ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:06:37, skipping insertion in model container [2021-01-07 05:06:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:06:36" (2/3) ... [2021-01-07 05:06:37,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4a9ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:06:37, skipping insertion in model container [2021-01-07 05:06:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:06:37" (3/3) ... [2021-01-07 05:06:37,662 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-2.i [2021-01-07 05:06:37,670 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:06:37,677 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-01-07 05:06:37,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-01-07 05:06:37,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:06:37,750 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:06:37,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:06:37,751 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:06:37,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:06:37,751 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:06:37,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:06:37,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:06:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-07 05:06:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:06:37,781 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:37,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:06:37,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:06:37,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795729338] [2021-01-07 05:06:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,009 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 05:06:38,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795729338] [2021-01-07 05:06:38,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:38,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:06:38,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327919337] [2021-01-07 05:06:38,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:06:38,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:06:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:06:38,038 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-01-07 05:06:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:38,128 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-01-07 05:06:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:06:38,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:06:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:38,147 INFO L225 Difference]: With dead ends: 38 [2021-01-07 05:06:38,147 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:06:38,149 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 05:06:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:06:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-01-07 05:06:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-07 05:06:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-01-07 05:06:38,190 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 4 [2021-01-07 05:06:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:38,191 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-01-07 05:06:38,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:06:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-01-07 05:06:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:06:38,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:38,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:06:38,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:06:38,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:38,194 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:06:38,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:38,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479515291] [2021-01-07 05:06:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,276 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 05:06:38,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479515291] [2021-01-07 05:06:38,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:38,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:06:38,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846861788] [2021-01-07 05:06:38,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:06:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:38,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:06:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:06:38,281 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2021-01-07 05:06:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:38,421 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-01-07 05:06:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:06:38,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:06:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:38,424 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:06:38,424 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:06:38,425 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 05:06:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:06:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48. [2021-01-07 05:06:38,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:06:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-01-07 05:06:38,435 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 4 [2021-01-07 05:06:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:38,436 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-01-07 05:06:38,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:06:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-01-07 05:06:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:06:38,437 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:38,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:38,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:06:38,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:38,439 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:06:38,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:38,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547227633] [2021-01-07 05:06:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,553 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 05:06:38,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547227633] [2021-01-07 05:06:38,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67320045] [2021-01-07 05:06:38,554 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 05:06:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:06:38,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:38,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:38,858 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:38,871 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:38,873 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:38,874 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:38,915 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 05:06:38,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:38,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:06:38,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132510163] [2021-01-07 05:06:38,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:06:38,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:06:38,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:06:38,919 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 4 states. [2021-01-07 05:06:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:39,156 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2021-01-07 05:06:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:06:39,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:06:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:39,159 INFO L225 Difference]: With dead ends: 99 [2021-01-07 05:06:39,160 INFO L226 Difference]: Without dead ends: 99 [2021-01-07 05:06:39,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 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 05:06:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-07 05:06:39,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2021-01-07 05:06:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-07 05:06:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-01-07 05:06:39,171 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 8 [2021-01-07 05:06:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:39,172 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-01-07 05:06:39,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:06:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2021-01-07 05:06:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:06:39,173 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:39,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:39,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:06:39,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:39,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1897409069, now seen corresponding path program 1 times [2021-01-07 05:06:39,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:39,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179128311] [2021-01-07 05:06:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:39,488 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 05:06:39,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179128311] [2021-01-07 05:06:39,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:39,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:06:39,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831868639] [2021-01-07 05:06:39,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:06:39,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:06:39,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:06:39,493 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 4 states. [2021-01-07 05:06:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:39,544 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2021-01-07 05:06:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:06:39,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:06:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:39,546 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:06:39,547 INFO L226 Difference]: Without dead ends: 65 [2021-01-07 05:06:39,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 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 05:06:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-07 05:06:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-01-07 05:06:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:06:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2021-01-07 05:06:39,557 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 9 [2021-01-07 05:06:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:39,560 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2021-01-07 05:06:39,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:06:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2021-01-07 05:06:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:06:39,561 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:39,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:39,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:06:39,562 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:39,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1399184873, now seen corresponding path program 1 times [2021-01-07 05:06:39,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:39,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784807430] [2021-01-07 05:06:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:39,660 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 05:06:39,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784807430] [2021-01-07 05:06:39,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:39,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:06:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009685193] [2021-01-07 05:06:39,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:06:39,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:39,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:06:39,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:06:39,663 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 5 states. [2021-01-07 05:06:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:39,796 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-01-07 05:06:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:06:39,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-07 05:06:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:39,803 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:06:39,803 INFO L226 Difference]: Without dead ends: 89 [2021-01-07 05:06:39,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:06:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-07 05:06:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2021-01-07 05:06:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:06:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-01-07 05:06:39,825 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 11 [2021-01-07 05:06:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:39,825 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-01-07 05:06:39,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:06:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-01-07 05:06:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:06:39,826 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:39,826 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2021-01-07 05:06:39,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:06:39,831 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:39,833 INFO L82 PathProgramCache]: Analyzing trace with hash 276944844, now seen corresponding path program 2 times [2021-01-07 05:06:39,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:39,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579463768] [2021-01-07 05:06:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:39,966 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 05:06:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579463768] [2021-01-07 05:06:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346961076] [2021-01-07 05:06:39,967 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 05:06:40,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:40,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:06:40,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:40,054 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:40,056 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:40,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:40,068 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:40,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:40,112 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 05:06:40,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:40,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-07 05:06:40,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677195400] [2021-01-07 05:06:40,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:06:40,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:40,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:06:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:06:40,115 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 5 states. [2021-01-07 05:06:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:40,456 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2021-01-07 05:06:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:06:40,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-07 05:06:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:40,464 INFO L225 Difference]: With dead ends: 135 [2021-01-07 05:06:40,464 INFO L226 Difference]: Without dead ends: 135 [2021-01-07 05:06:40,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:06:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-07 05:06:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 86. [2021-01-07 05:06:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:06:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2021-01-07 05:06:40,483 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 12 [2021-01-07 05:06:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:40,484 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2021-01-07 05:06:40,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:06:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2021-01-07 05:06:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:06:40,487 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:40,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:40,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:40,689 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:40,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:40,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1887191092, now seen corresponding path program 1 times [2021-01-07 05:06:40,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:40,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005940493] [2021-01-07 05:06:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:40,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005940493] [2021-01-07 05:06:40,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:40,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:06:40,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293755876] [2021-01-07 05:06:40,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:06:40,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:40,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:06:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:06:40,837 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 6 states. [2021-01-07 05:06:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:41,125 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2021-01-07 05:06:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:06:41,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-07 05:06:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:41,127 INFO L225 Difference]: With dead ends: 131 [2021-01-07 05:06:41,128 INFO L226 Difference]: Without dead ends: 131 [2021-01-07 05:06:41,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:06:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-07 05:06:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2021-01-07 05:06:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-07 05:06:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2021-01-07 05:06:41,135 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 15 [2021-01-07 05:06:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:41,135 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2021-01-07 05:06:41,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:06:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2021-01-07 05:06:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:06:41,136 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:41,136 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1] [2021-01-07 05:06:41,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:06:41,137 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash -924615345, now seen corresponding path program 3 times [2021-01-07 05:06:41,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:41,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473169905] [2021-01-07 05:06:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:41,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473169905] [2021-01-07 05:06:41,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579542755] [2021-01-07 05:06:41,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:41,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:06:41,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:41,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:06:41,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:41,360 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:41,362 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:41,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:41,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:41,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-01-07 05:06:41,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209301500] [2021-01-07 05:06:41,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:06:41,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:41,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:06:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:06:41,582 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 11 states. [2021-01-07 05:06:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:42,010 INFO L93 Difference]: Finished difference Result 168 states and 196 transitions. [2021-01-07 05:06:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:06:42,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2021-01-07 05:06:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:42,012 INFO L225 Difference]: With dead ends: 168 [2021-01-07 05:06:42,013 INFO L226 Difference]: Without dead ends: 168 [2021-01-07 05:06:42,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:06:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-01-07 05:06:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 104. [2021-01-07 05:06:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-01-07 05:06:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2021-01-07 05:06:42,020 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 16 [2021-01-07 05:06:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:42,021 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2021-01-07 05:06:42,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:06:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2021-01-07 05:06:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:06:42,022 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:42,022 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2021-01-07 05:06:42,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:42,236 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:42,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 4 times [2021-01-07 05:06:42,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:42,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23118877] [2021-01-07 05:06:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:42,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23118877] [2021-01-07 05:06:42,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556138601] [2021-01-07 05:06:42,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:42,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:06:42,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:06:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:42,553 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:42,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:42,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:42,567 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:42,568 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:42,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:42,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2021-01-07 05:06:42,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344425452] [2021-01-07 05:06:42,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:06:42,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:42,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:06:42,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:06:42,667 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand 8 states. [2021-01-07 05:06:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:43,289 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2021-01-07 05:06:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:06:43,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-07 05:06:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:43,294 INFO L225 Difference]: With dead ends: 209 [2021-01-07 05:06:43,294 INFO L226 Difference]: Without dead ends: 209 [2021-01-07 05:06:43,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:06:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-01-07 05:06:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 124. [2021-01-07 05:06:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-01-07 05:06:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-01-07 05:06:43,321 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 20 [2021-01-07 05:06:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:43,321 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-01-07 05:06:43,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:06:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-01-07 05:06:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:06:43,325 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:43,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:43,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:43,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash 213584247, now seen corresponding path program 1 times [2021-01-07 05:06:43,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:43,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634040198] [2021-01-07 05:06:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:06:43,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634040198] [2021-01-07 05:06:43,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:06:43,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:06:43,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503075546] [2021-01-07 05:06:43,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:06:43,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:06:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:06:43,694 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand 6 states. [2021-01-07 05:06:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:43,960 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2021-01-07 05:06:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:06:43,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-07 05:06:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:43,964 INFO L225 Difference]: With dead ends: 196 [2021-01-07 05:06:43,964 INFO L226 Difference]: Without dead ends: 196 [2021-01-07 05:06:43,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:06:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-01-07 05:06:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 122. [2021-01-07 05:06:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-07 05:06:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2021-01-07 05:06:43,969 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 21 [2021-01-07 05:06:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:43,970 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2021-01-07 05:06:43,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:06:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2021-01-07 05:06:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:06:43,971 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:43,971 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1] [2021-01-07 05:06:43,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:06:43,972 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:43,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1192369109, now seen corresponding path program 5 times [2021-01-07 05:06:43,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:43,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93466520] [2021-01-07 05:06:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:44,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93466520] [2021-01-07 05:06:44,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609128475] [2021-01-07 05:06:44,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:44,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-07 05:06:44,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:44,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:06:44,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:44,222 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:44,224 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:44,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:44,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:44,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:44,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-01-07 05:06:44,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791057956] [2021-01-07 05:06:44,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:06:44,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:06:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:06:44,309 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2021-01-07 05:06:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:45,068 INFO L93 Difference]: Finished difference Result 236 states and 276 transitions. [2021-01-07 05:06:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:06:45,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2021-01-07 05:06:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:45,071 INFO L225 Difference]: With dead ends: 236 [2021-01-07 05:06:45,071 INFO L226 Difference]: Without dead ends: 236 [2021-01-07 05:06:45,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:06:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-01-07 05:06:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 142. [2021-01-07 05:06:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-07 05:06:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2021-01-07 05:06:45,077 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 24 [2021-01-07 05:06:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:45,077 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2021-01-07 05:06:45,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:06:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2021-01-07 05:06:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:06:45,078 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:45,079 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1] [2021-01-07 05:06:45,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-07 05:06:45,289 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:45,290 INFO L82 PathProgramCache]: Analyzing trace with hash -164588328, now seen corresponding path program 6 times [2021-01-07 05:06:45,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:45,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067912565] [2021-01-07 05:06:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:45,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067912565] [2021-01-07 05:06:45,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33534262] [2021-01-07 05:06:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:45,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-07 05:06:45,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:45,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:06:45,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:45,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:45,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:45,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:45,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:45,635 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:46,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-01-07 05:06:46,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237224183] [2021-01-07 05:06:46,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:06:46,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:06:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:06:46,009 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand 17 states. [2021-01-07 05:06:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:46,911 INFO L93 Difference]: Finished difference Result 275 states and 322 transitions. [2021-01-07 05:06:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:06:46,912 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2021-01-07 05:06:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:46,914 INFO L225 Difference]: With dead ends: 275 [2021-01-07 05:06:46,914 INFO L226 Difference]: Without dead ends: 275 [2021-01-07 05:06:46,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:06:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-01-07 05:06:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 162. [2021-01-07 05:06:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-07 05:06:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2021-01-07 05:06:46,920 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 28 [2021-01-07 05:06:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:46,920 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2021-01-07 05:06:46,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:06:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2021-01-07 05:06:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:06:46,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:46,922 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1] [2021-01-07 05:06:47,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:47,137 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:47,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1886071717, now seen corresponding path program 7 times [2021-01-07 05:06:47,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:47,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344935476] [2021-01-07 05:06:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344935476] [2021-01-07 05:06:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79579171] [2021-01-07 05:06:47,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:47,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:06:47,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:47,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:47,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:47,608 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:47,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:47,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-01-07 05:06:47,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933502936] [2021-01-07 05:06:47,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:06:47,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:06:47,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:06:47,706 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 10 states. [2021-01-07 05:06:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:48,941 INFO L93 Difference]: Finished difference Result 314 states and 368 transitions. [2021-01-07 05:06:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:06:48,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2021-01-07 05:06:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:48,944 INFO L225 Difference]: With dead ends: 314 [2021-01-07 05:06:48,944 INFO L226 Difference]: Without dead ends: 314 [2021-01-07 05:06:48,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:06:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-01-07 05:06:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 182. [2021-01-07 05:06:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-07 05:06:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2021-01-07 05:06:48,950 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 32 [2021-01-07 05:06:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:48,951 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2021-01-07 05:06:48,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:06:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2021-01-07 05:06:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:06:48,952 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:48,952 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1] [2021-01-07 05:06:49,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:49,168 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:49,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1442290270, now seen corresponding path program 8 times [2021-01-07 05:06:49,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:49,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13958549] [2021-01-07 05:06:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13958549] [2021-01-07 05:06:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942668686] [2021-01-07 05:06:49,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:49,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:49,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:49,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-07 05:06:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:49,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:49,572 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:49,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:49,584 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:49,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:49,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:49,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-01-07 05:06:49,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776066925] [2021-01-07 05:06:49,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:06:49,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:06:49,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:06:49,701 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 11 states. [2021-01-07 05:06:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:51,357 INFO L93 Difference]: Finished difference Result 353 states and 414 transitions. [2021-01-07 05:06:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:06:51,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2021-01-07 05:06:51,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:51,359 INFO L225 Difference]: With dead ends: 353 [2021-01-07 05:06:51,359 INFO L226 Difference]: Without dead ends: 353 [2021-01-07 05:06:51,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:06:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-01-07 05:06:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 202. [2021-01-07 05:06:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-07 05:06:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2021-01-07 05:06:51,367 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 36 [2021-01-07 05:06:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:51,367 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2021-01-07 05:06:51,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:06:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2021-01-07 05:06:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:06:51,368 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:51,368 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1] [2021-01-07 05:06:51,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:06:51,584 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:51,586 INFO L82 PathProgramCache]: Analyzing trace with hash 28419809, now seen corresponding path program 9 times [2021-01-07 05:06:51,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:51,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984814660] [2021-01-07 05:06:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:51,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984814660] [2021-01-07 05:06:51,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039997129] [2021-01-07 05:06:51,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:52,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-07 05:06:52,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:52,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:06:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:52,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:52,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:52,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:52,095 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:52,096 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:52,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:52,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-01-07 05:06:52,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592045816] [2021-01-07 05:06:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:06:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:06:52,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:06:52,708 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand 23 states. [2021-01-07 05:06:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:54,290 INFO L93 Difference]: Finished difference Result 392 states and 460 transitions. [2021-01-07 05:06:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:06:54,291 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2021-01-07 05:06:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:54,295 INFO L225 Difference]: With dead ends: 392 [2021-01-07 05:06:54,295 INFO L226 Difference]: Without dead ends: 392 [2021-01-07 05:06:54,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:06:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-01-07 05:06:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 222. [2021-01-07 05:06:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-07 05:06:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 264 transitions. [2021-01-07 05:06:54,303 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 264 transitions. Word has length 40 [2021-01-07 05:06:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:54,303 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 264 transitions. [2021-01-07 05:06:54,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:06:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 264 transitions. [2021-01-07 05:06:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:06:54,305 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:54,305 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1] [2021-01-07 05:06:54,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:06:54,507 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:54,508 INFO L82 PathProgramCache]: Analyzing trace with hash -256132636, now seen corresponding path program 10 times [2021-01-07 05:06:54,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:54,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941444328] [2021-01-07 05:06:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:54,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941444328] [2021-01-07 05:06:54,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121973243] [2021-01-07 05:06:54,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:55,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:06:55,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:55,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:06:55,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:55,052 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:55,054 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:55,063 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:55,064 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:55,064 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:55,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:55,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 13 [2021-01-07 05:06:55,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199444084] [2021-01-07 05:06:55,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:06:55,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:55,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:06:55,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:06:55,217 INFO L87 Difference]: Start difference. First operand 222 states and 264 transitions. Second operand 14 states. [2021-01-07 05:06:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:57,667 INFO L93 Difference]: Finished difference Result 431 states and 506 transitions. [2021-01-07 05:06:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:06:57,668 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2021-01-07 05:06:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:57,671 INFO L225 Difference]: With dead ends: 431 [2021-01-07 05:06:57,671 INFO L226 Difference]: Without dead ends: 431 [2021-01-07 05:06:57,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:06:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-01-07 05:06:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 242. [2021-01-07 05:06:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-01-07 05:06:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 288 transitions. [2021-01-07 05:06:57,679 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 288 transitions. Word has length 44 [2021-01-07 05:06:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:57,680 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 288 transitions. [2021-01-07 05:06:57,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:06:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 288 transitions. [2021-01-07 05:06:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-07 05:06:57,681 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:57,681 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1] [2021-01-07 05:06:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:06:57,896 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:57,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1454281575, now seen corresponding path program 11 times [2021-01-07 05:06:57,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:57,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410685272] [2021-01-07 05:06:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:58,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410685272] [2021-01-07 05:06:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583385414] [2021-01-07 05:06:58,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:58,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-07 05:06:58,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:58,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:06:58,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:58,466 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:06:58,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:58,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:58,480 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:58,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:06:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:58,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:58,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-07 05:06:58,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42037950] [2021-01-07 05:06:58,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:06:58,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:06:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:06:58,647 INFO L87 Difference]: Start difference. First operand 242 states and 288 transitions. Second operand 14 states. [2021-01-07 05:07:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:01,430 INFO L93 Difference]: Finished difference Result 470 states and 552 transitions. [2021-01-07 05:07:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:07:01,431 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2021-01-07 05:07:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:01,434 INFO L225 Difference]: With dead ends: 470 [2021-01-07 05:07:01,434 INFO L226 Difference]: Without dead ends: 470 [2021-01-07 05:07:01,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:07:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-01-07 05:07:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 262. [2021-01-07 05:07:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-01-07 05:07:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 312 transitions. [2021-01-07 05:07:01,442 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 312 transitions. Word has length 48 [2021-01-07 05:07:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:01,443 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 312 transitions. [2021-01-07 05:07:01,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:07:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 312 transitions. [2021-01-07 05:07:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-07 05:07:01,444 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:01,444 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1] [2021-01-07 05:07:01,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-07 05:07:01,658 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:01,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1824715626, now seen corresponding path program 12 times [2021-01-07 05:07:01,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:01,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573059797] [2021-01-07 05:07:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:02,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573059797] [2021-01-07 05:07:02,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928317903] [2021-01-07 05:07:02,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:02,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-07 05:07:02,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:07:02,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:02,370 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:02,371 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:02,383 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:02,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:02,385 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2021-01-07 05:07:03,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7881481] [2021-01-07 05:07:03,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:07:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:03,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:07:03,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:07:03,283 INFO L87 Difference]: Start difference. First operand 262 states and 312 transitions. Second operand 29 states. [2021-01-07 05:07:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:05,761 INFO L93 Difference]: Finished difference Result 509 states and 598 transitions. [2021-01-07 05:07:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:07:05,762 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2021-01-07 05:07:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:05,766 INFO L225 Difference]: With dead ends: 509 [2021-01-07 05:07:05,766 INFO L226 Difference]: Without dead ends: 509 [2021-01-07 05:07:05,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:07:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-01-07 05:07:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 282. [2021-01-07 05:07:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-01-07 05:07:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 336 transitions. [2021-01-07 05:07:05,779 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 336 transitions. Word has length 52 [2021-01-07 05:07:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:05,779 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 336 transitions. [2021-01-07 05:07:05,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:07:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 336 transitions. [2021-01-07 05:07:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-07 05:07:05,780 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:05,781 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1] [2021-01-07 05:07:05,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:07:05,997 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1580099091, now seen corresponding path program 13 times [2021-01-07 05:07:05,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:05,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783543411] [2021-01-07 05:07:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:06,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783543411] [2021-01-07 05:07:06,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827649634] [2021-01-07 05:07:06,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:06,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:07:06,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:06,707 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:06,709 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:06,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:06,719 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:06,719 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:06,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:06,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-01-07 05:07:06,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868412764] [2021-01-07 05:07:06,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:07:06,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:06,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:07:06,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:07:06,857 INFO L87 Difference]: Start difference. First operand 282 states and 336 transitions. Second operand 16 states. [2021-01-07 05:07:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:10,481 INFO L93 Difference]: Finished difference Result 548 states and 644 transitions. [2021-01-07 05:07:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:07:10,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2021-01-07 05:07:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:10,485 INFO L225 Difference]: With dead ends: 548 [2021-01-07 05:07:10,486 INFO L226 Difference]: Without dead ends: 548 [2021-01-07 05:07:10,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:07:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-01-07 05:07:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 302. [2021-01-07 05:07:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-01-07 05:07:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 360 transitions. [2021-01-07 05:07:10,500 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 360 transitions. Word has length 56 [2021-01-07 05:07:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:10,500 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 360 transitions. [2021-01-07 05:07:10,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:07:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 360 transitions. [2021-01-07 05:07:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-07 05:07:10,502 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:10,502 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1] [2021-01-07 05:07:10,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:10,718 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:10,719 INFO L82 PathProgramCache]: Analyzing trace with hash -900512016, now seen corresponding path program 14 times [2021-01-07 05:07:10,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:10,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266137430] [2021-01-07 05:07:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:11,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266137430] [2021-01-07 05:07:11,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623464753] [2021-01-07 05:07:11,340 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 05:07:11,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:11,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:11,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:07:11,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:11,460 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:11,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:11,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:11,477 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:11,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:11,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:11,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-01-07 05:07:11,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885777114] [2021-01-07 05:07:11,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:07:11,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:11,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:07:11,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:07:11,637 INFO L87 Difference]: Start difference. First operand 302 states and 360 transitions. Second operand 17 states. [2021-01-07 05:07:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:15,828 INFO L93 Difference]: Finished difference Result 587 states and 690 transitions. [2021-01-07 05:07:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:07:15,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2021-01-07 05:07:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:15,833 INFO L225 Difference]: With dead ends: 587 [2021-01-07 05:07:15,833 INFO L226 Difference]: Without dead ends: 587 [2021-01-07 05:07:15,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:07:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-01-07 05:07:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 322. [2021-01-07 05:07:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2021-01-07 05:07:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 384 transitions. [2021-01-07 05:07:15,842 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 384 transitions. Word has length 60 [2021-01-07 05:07:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:15,842 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 384 transitions. [2021-01-07 05:07:15,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:07:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 384 transitions. [2021-01-07 05:07:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-07 05:07:15,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:15,844 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1] [2021-01-07 05:07:16,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:16,058 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:16,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1348516467, now seen corresponding path program 15 times [2021-01-07 05:07:16,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:16,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239288990] [2021-01-07 05:07:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239288990] [2021-01-07 05:07:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359520922] [2021-01-07 05:07:16,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:17,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-07 05:07:17,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:17,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:07:17,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:17,270 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:17,272 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:17,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:17,283 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:17,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:18,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:18,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2021-01-07 05:07:18,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849827525] [2021-01-07 05:07:18,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:07:18,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:18,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:07:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:07:18,693 INFO L87 Difference]: Start difference. First operand 322 states and 384 transitions. Second operand 35 states. [2021-01-07 05:07:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:22,457 INFO L93 Difference]: Finished difference Result 626 states and 736 transitions. [2021-01-07 05:07:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:07:22,458 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 64 [2021-01-07 05:07:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:22,462 INFO L225 Difference]: With dead ends: 626 [2021-01-07 05:07:22,462 INFO L226 Difference]: Without dead ends: 626 [2021-01-07 05:07:22,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:07:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-01-07 05:07:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 342. [2021-01-07 05:07:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2021-01-07 05:07:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 408 transitions. [2021-01-07 05:07:22,472 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 408 transitions. Word has length 64 [2021-01-07 05:07:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:22,472 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 408 transitions. [2021-01-07 05:07:22,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:07:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 408 transitions. [2021-01-07 05:07:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-07 05:07:22,473 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:22,473 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1] [2021-01-07 05:07:22,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-07 05:07:22,688 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1672655990, now seen corresponding path program 16 times [2021-01-07 05:07:22,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:22,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338120275] [2021-01-07 05:07:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:23,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338120275] [2021-01-07 05:07:23,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100902939] [2021-01-07 05:07:23,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:23,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:07:23,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:07:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:23,665 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:23,667 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:23,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:23,679 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:23,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:23,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:23,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 19 [2021-01-07 05:07:23,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103955673] [2021-01-07 05:07:23,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:07:23,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:07:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:23,913 INFO L87 Difference]: Start difference. First operand 342 states and 408 transitions. Second operand 20 states. [2021-01-07 05:07:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:29,405 INFO L93 Difference]: Finished difference Result 665 states and 782 transitions. [2021-01-07 05:07:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:07:29,408 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2021-01-07 05:07:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:29,411 INFO L225 Difference]: With dead ends: 665 [2021-01-07 05:07:29,411 INFO L226 Difference]: Without dead ends: 665 [2021-01-07 05:07:29,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-01-07 05:07:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2021-01-07 05:07:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2021-01-07 05:07:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 432 transitions. [2021-01-07 05:07:29,420 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 432 transitions. Word has length 68 [2021-01-07 05:07:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:29,420 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 432 transitions. [2021-01-07 05:07:29,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:07:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 432 transitions. [2021-01-07 05:07:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-07 05:07:29,422 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:29,422 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1] [2021-01-07 05:07:29,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:29,636 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:29,637 INFO L82 PathProgramCache]: Analyzing trace with hash 698479865, now seen corresponding path program 17 times [2021-01-07 05:07:29,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:29,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937717116] [2021-01-07 05:07:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:30,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937717116] [2021-01-07 05:07:30,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240749525] [2021-01-07 05:07:30,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:30,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-07 05:07:30,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:30,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:07:30,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:30,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:30,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:30,636 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:30,637 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:30,637 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:30,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:30,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-07 05:07:30,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833421583] [2021-01-07 05:07:30,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:07:30,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:07:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:30,792 INFO L87 Difference]: Start difference. First operand 362 states and 432 transitions. Second operand 20 states. [2021-01-07 05:07:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:36,860 INFO L93 Difference]: Finished difference Result 704 states and 828 transitions. [2021-01-07 05:07:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:07:36,861 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2021-01-07 05:07:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:36,865 INFO L225 Difference]: With dead ends: 704 [2021-01-07 05:07:36,865 INFO L226 Difference]: Without dead ends: 704 [2021-01-07 05:07:36,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-01-07 05:07:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 382. [2021-01-07 05:07:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2021-01-07 05:07:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 456 transitions. [2021-01-07 05:07:36,874 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 456 transitions. Word has length 72 [2021-01-07 05:07:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:36,874 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 456 transitions. [2021-01-07 05:07:36,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:07:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 456 transitions. [2021-01-07 05:07:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-07 05:07:36,876 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:36,876 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1] [2021-01-07 05:07:37,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:07:37,090 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:37,091 INFO L82 PathProgramCache]: Analyzing trace with hash -316195844, now seen corresponding path program 18 times [2021-01-07 05:07:37,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:37,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700501127] [2021-01-07 05:07:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700501127] [2021-01-07 05:07:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935064917] [2021-01-07 05:07:37,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:38,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-07 05:07:38,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:38,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:07:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:38,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:38,661 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:38,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:38,674 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:38,674 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:40,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:40,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 40 [2021-01-07 05:07:40,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779558343] [2021-01-07 05:07:40,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:07:40,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:40,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:07:40,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:07:40,612 INFO L87 Difference]: Start difference. First operand 382 states and 456 transitions. Second operand 41 states. [2021-01-07 05:07:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:45,439 INFO L93 Difference]: Finished difference Result 743 states and 874 transitions. [2021-01-07 05:07:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:07:45,440 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 76 [2021-01-07 05:07:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:45,444 INFO L225 Difference]: With dead ends: 743 [2021-01-07 05:07:45,444 INFO L226 Difference]: Without dead ends: 743 [2021-01-07 05:07:45,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:07:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-01-07 05:07:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 402. [2021-01-07 05:07:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2021-01-07 05:07:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 480 transitions. [2021-01-07 05:07:45,454 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 480 transitions. Word has length 76 [2021-01-07 05:07:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:45,454 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 480 transitions. [2021-01-07 05:07:45,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:07:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 480 transitions. [2021-01-07 05:07:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 05:07:45,456 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:45,456 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1] [2021-01-07 05:07:45,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:07:45,670 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1322994047, now seen corresponding path program 19 times [2021-01-07 05:07:45,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:45,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449898674] [2021-01-07 05:07:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:46,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449898674] [2021-01-07 05:07:46,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361073696] [2021-01-07 05:07:46,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:46,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-07 05:07:46,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:46,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:46,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:46,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:46,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:46,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:46,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-07 05:07:46,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936070885] [2021-01-07 05:07:46,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:07:46,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:07:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:07:46,946 INFO L87 Difference]: Start difference. First operand 402 states and 480 transitions. Second operand 22 states. [2021-01-07 05:07:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:54,514 INFO L93 Difference]: Finished difference Result 782 states and 920 transitions. [2021-01-07 05:07:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:07:54,515 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 80 [2021-01-07 05:07:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:54,519 INFO L225 Difference]: With dead ends: 782 [2021-01-07 05:07:54,519 INFO L226 Difference]: Without dead ends: 782 [2021-01-07 05:07:54,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:07:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-01-07 05:07:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 422. [2021-01-07 05:07:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2021-01-07 05:07:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 504 transitions. [2021-01-07 05:07:54,532 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 504 transitions. Word has length 80 [2021-01-07 05:07:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:54,532 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 504 transitions. [2021-01-07 05:07:54,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:07:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 504 transitions. [2021-01-07 05:07:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:07:54,533 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:54,534 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1] [2021-01-07 05:07:54,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:07:54,748 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1962335618, now seen corresponding path program 20 times [2021-01-07 05:07:54,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:54,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139955736] [2021-01-07 05:07:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:55,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139955736] [2021-01-07 05:07:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494901230] [2021-01-07 05:07:55,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:55,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:55,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:55,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:07:55,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:55,920 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:07:55,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,936 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:07:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:56,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:56,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-07 05:07:56,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133258440] [2021-01-07 05:07:56,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:07:56,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:56,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:07:56,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:07:56,129 INFO L87 Difference]: Start difference. First operand 422 states and 504 transitions. Second operand 23 states. [2021-01-07 05:08:04,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:04,611 INFO L93 Difference]: Finished difference Result 821 states and 966 transitions. [2021-01-07 05:08:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:08:04,612 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2021-01-07 05:08:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:04,615 INFO L225 Difference]: With dead ends: 821 [2021-01-07 05:08:04,616 INFO L226 Difference]: Without dead ends: 821 [2021-01-07 05:08:04,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:08:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-01-07 05:08:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 442. [2021-01-07 05:08:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-01-07 05:08:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 528 transitions. [2021-01-07 05:08:04,625 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 528 transitions. Word has length 84 [2021-01-07 05:08:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:04,625 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 528 transitions. [2021-01-07 05:08:04,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:08:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 528 transitions. [2021-01-07 05:08:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-07 05:08:04,627 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:04,627 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1] [2021-01-07 05:08:04,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:08:04,843 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash 995276805, now seen corresponding path program 21 times [2021-01-07 05:08:04,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:04,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315633800] [2021-01-07 05:08:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315633800] [2021-01-07 05:08:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052864404] [2021-01-07 05:08:05,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:06,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-01-07 05:08:06,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:06,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:08:06,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:06,969 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:08:06,971 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:06,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:06,984 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:06,985 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:09,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:09,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2021-01-07 05:08:09,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616743074] [2021-01-07 05:08:09,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-07 05:08:09,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:09,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-07 05:08:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:08:09,604 INFO L87 Difference]: Start difference. First operand 442 states and 528 transitions. Second operand 47 states. [2021-01-07 05:08:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:16,200 INFO L93 Difference]: Finished difference Result 860 states and 1012 transitions. [2021-01-07 05:08:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:08:16,200 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 88 [2021-01-07 05:08:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:16,205 INFO L225 Difference]: With dead ends: 860 [2021-01-07 05:08:16,205 INFO L226 Difference]: Without dead ends: 860 [2021-01-07 05:08:16,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:08:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-01-07 05:08:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 462. [2021-01-07 05:08:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2021-01-07 05:08:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 552 transitions. [2021-01-07 05:08:16,216 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 552 transitions. Word has length 88 [2021-01-07 05:08:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:16,216 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 552 transitions. [2021-01-07 05:08:16,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-07 05:08:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 552 transitions. [2021-01-07 05:08:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-01-07 05:08:16,218 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:16,218 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1] [2021-01-07 05:08:16,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:08:16,433 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1667733768, now seen corresponding path program 22 times [2021-01-07 05:08:16,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:16,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979860939] [2021-01-07 05:08:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:17,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979860939] [2021-01-07 05:08:17,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555154410] [2021-01-07 05:08:17,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:18,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:18,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-07 05:08:18,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:18,317 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:08:18,319 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:18,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:18,330 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:18,330 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:18,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:18,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 25 [2021-01-07 05:08:18,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302663336] [2021-01-07 05:08:18,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:08:18,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:18,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:08:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:18,655 INFO L87 Difference]: Start difference. First operand 462 states and 552 transitions. Second operand 26 states. [2021-01-07 05:08:29,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:29,159 INFO L93 Difference]: Finished difference Result 899 states and 1058 transitions. [2021-01-07 05:08:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:08:29,164 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 92 [2021-01-07 05:08:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:29,167 INFO L225 Difference]: With dead ends: 899 [2021-01-07 05:08:29,167 INFO L226 Difference]: Without dead ends: 899 [2021-01-07 05:08:29,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-01-07 05:08:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 482. [2021-01-07 05:08:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2021-01-07 05:08:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 576 transitions. [2021-01-07 05:08:29,176 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 576 transitions. Word has length 92 [2021-01-07 05:08:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:29,176 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 576 transitions. [2021-01-07 05:08:29,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:08:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 576 transitions. [2021-01-07 05:08:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-07 05:08:29,178 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:29,178 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1] [2021-01-07 05:08:29,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:29,394 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:29,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1001504629, now seen corresponding path program 23 times [2021-01-07 05:08:29,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:29,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389085300] [2021-01-07 05:08:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:30,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389085300] [2021-01-07 05:08:30,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073467283] [2021-01-07 05:08:30,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:31,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-01-07 05:08:31,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:31,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:08:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:31,280 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:08:31,282 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:31,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:31,296 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:31,297 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:31,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:31,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-07 05:08:31,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875880438] [2021-01-07 05:08:31,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:08:31,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:31,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:08:31,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:31,563 INFO L87 Difference]: Start difference. First operand 482 states and 576 transitions. Second operand 26 states. [2021-01-07 05:08:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:41,833 INFO L93 Difference]: Finished difference Result 938 states and 1104 transitions. [2021-01-07 05:08:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:08:41,834 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 96 [2021-01-07 05:08:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:41,839 INFO L225 Difference]: With dead ends: 938 [2021-01-07 05:08:41,839 INFO L226 Difference]: Without dead ends: 938 [2021-01-07 05:08:41,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-01-07 05:08:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 502. [2021-01-07 05:08:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2021-01-07 05:08:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 600 transitions. [2021-01-07 05:08:41,849 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 600 transitions. Word has length 96 [2021-01-07 05:08:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:41,849 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 600 transitions. [2021-01-07 05:08:41,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:08:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 600 transitions. [2021-01-07 05:08:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-07 05:08:41,851 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:41,851 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1] [2021-01-07 05:08:42,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:08:42,066 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:42,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:42,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2059366030, now seen corresponding path program 24 times [2021-01-07 05:08:42,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:42,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875473356] [2021-01-07 05:08:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:43,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875473356] [2021-01-07 05:08:43,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126683174] [2021-01-07 05:08:43,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:47,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-07 05:08:47,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:47,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:08:47,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:47,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:08:47,614 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:47,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:47,628 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:47,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:50,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:50,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2021-01-07 05:08:50,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746061643] [2021-01-07 05:08:50,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:08:50,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:50,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:08:50,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:08:50,819 INFO L87 Difference]: Start difference. First operand 502 states and 600 transitions. Second operand 53 states. [2021-01-07 05:09:00,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:00,873 INFO L93 Difference]: Finished difference Result 977 states and 1150 transitions. [2021-01-07 05:09:00,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:09:00,874 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 100 [2021-01-07 05:09:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:00,879 INFO L225 Difference]: With dead ends: 977 [2021-01-07 05:09:00,880 INFO L226 Difference]: Without dead ends: 977 [2021-01-07 05:09:00,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:09:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-01-07 05:09:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 522. [2021-01-07 05:09:00,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2021-01-07 05:09:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 624 transitions. [2021-01-07 05:09:00,889 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 624 transitions. Word has length 100 [2021-01-07 05:09:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:00,890 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 624 transitions. [2021-01-07 05:09:00,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:09:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 624 transitions. [2021-01-07 05:09:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-01-07 05:09:00,891 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:00,892 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1] [2021-01-07 05:09:01,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:01,106 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:01,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash 420733713, now seen corresponding path program 25 times [2021-01-07 05:09:01,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:01,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626415266] [2021-01-07 05:09:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:02,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626415266] [2021-01-07 05:09:02,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622275946] [2021-01-07 05:09:02,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:02,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-07 05:09:02,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:02,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:02,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:02,738 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:02,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:09:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:03,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:03,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-01-07 05:09:03,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496421561] [2021-01-07 05:09:03,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:09:03,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:03,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:09:03,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:09:03,024 INFO L87 Difference]: Start difference. First operand 522 states and 624 transitions. Second operand 28 states. [2021-01-07 05:09:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:15,240 INFO L93 Difference]: Finished difference Result 1016 states and 1196 transitions. [2021-01-07 05:09:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:09:15,242 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 104 [2021-01-07 05:09:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:15,246 INFO L225 Difference]: With dead ends: 1016 [2021-01-07 05:09:15,247 INFO L226 Difference]: Without dead ends: 1016 [2021-01-07 05:09:15,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:09:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-01-07 05:09:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 542. [2021-01-07 05:09:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2021-01-07 05:09:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 648 transitions. [2021-01-07 05:09:15,256 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 648 transitions. Word has length 104 [2021-01-07 05:09:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:15,257 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 648 transitions. [2021-01-07 05:09:15,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:09:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 648 transitions. [2021-01-07 05:09:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-01-07 05:09:15,258 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:15,258 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1] [2021-01-07 05:09:15,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-07 05:09:15,474 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash -683385324, now seen corresponding path program 26 times [2021-01-07 05:09:15,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:15,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794204409] [2021-01-07 05:09:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:16,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794204409] [2021-01-07 05:09:16,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388005679] [2021-01-07 05:09:16,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:17,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:09:17,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:17,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-07 05:09:17,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:17,098 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:17,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:17,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:17,110 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:17,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:09:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:17,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:17,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-01-07 05:09:17,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356335375] [2021-01-07 05:09:17,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:09:17,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:17,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:09:17,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:09:17,381 INFO L87 Difference]: Start difference. First operand 542 states and 648 transitions. Second operand 29 states. [2021-01-07 05:09:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:31,509 INFO L93 Difference]: Finished difference Result 1055 states and 1242 transitions. [2021-01-07 05:09:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-07 05:09:31,511 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 108 [2021-01-07 05:09:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:31,516 INFO L225 Difference]: With dead ends: 1055 [2021-01-07 05:09:31,516 INFO L226 Difference]: Without dead ends: 1055 [2021-01-07 05:09:31,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:09:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-01-07 05:09:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 562. [2021-01-07 05:09:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2021-01-07 05:09:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 672 transitions. [2021-01-07 05:09:31,528 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 672 transitions. Word has length 108 [2021-01-07 05:09:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:31,528 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 672 transitions. [2021-01-07 05:09:31,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:09:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 672 transitions. [2021-01-07 05:09:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-07 05:09:31,529 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:31,530 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1] [2021-01-07 05:09:31,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:31,731 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:31,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1024876649, now seen corresponding path program 27 times [2021-01-07 05:09:31,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:31,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358015279] [2021-01-07 05:09:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:33,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358015279] [2021-01-07 05:09:33,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245357971] [2021-01-07 05:09:33,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:38,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-01-07 05:09:38,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:38,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:09:38,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:38,302 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:38,303 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:38,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:38,317 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:38,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:09:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:42,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:42,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 58 [2021-01-07 05:09:42,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897212183] [2021-01-07 05:09:42,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-07 05:09:42,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:42,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-07 05:09:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:09:42,570 INFO L87 Difference]: Start difference. First operand 562 states and 672 transitions. Second operand 59 states. [2021-01-07 05:09:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:55,844 INFO L93 Difference]: Finished difference Result 1094 states and 1288 transitions. [2021-01-07 05:09:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-07 05:09:55,845 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 112 [2021-01-07 05:09:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:55,850 INFO L225 Difference]: With dead ends: 1094 [2021-01-07 05:09:55,850 INFO L226 Difference]: Without dead ends: 1094 [2021-01-07 05:09:55,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:09:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-01-07 05:09:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 582. [2021-01-07 05:09:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2021-01-07 05:09:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 696 transitions. [2021-01-07 05:09:55,866 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 696 transitions. Word has length 112 [2021-01-07 05:09:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 696 transitions. [2021-01-07 05:09:55,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2021-01-07 05:09:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 696 transitions. [2021-01-07 05:09:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-07 05:09:55,869 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:09:55,869 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1] [2021-01-07 05:09:56,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:09:56,085 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:09:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:09:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash -281253990, now seen corresponding path program 28 times [2021-01-07 05:09:56,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:09:56,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544127094] [2021-01-07 05:09:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:09:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:09:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:57,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544127094] [2021-01-07 05:09:57,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758816985] [2021-01-07 05:09:57,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:59,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:09:59,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:09:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-07 05:09:59,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:09:59,351 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:09:59,353 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:09:59,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:09:59,368 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:09:59,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:09:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:09:59,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:09:59,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 31 [2021-01-07 05:09:59,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614274525] [2021-01-07 05:09:59,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:09:59,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:09:59,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:09:59,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:09:59,792 INFO L87 Difference]: Start difference. First operand 582 states and 696 transitions. Second operand 32 states. [2021-01-07 05:10:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:15,436 INFO L93 Difference]: Finished difference Result 1133 states and 1334 transitions. [2021-01-07 05:10:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:10:15,437 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2021-01-07 05:10:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:15,442 INFO L225 Difference]: With dead ends: 1133 [2021-01-07 05:10:15,442 INFO L226 Difference]: Without dead ends: 1133 [2021-01-07 05:10:15,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:10:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-01-07 05:10:15,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 602. [2021-01-07 05:10:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2021-01-07 05:10:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 720 transitions. [2021-01-07 05:10:15,453 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 720 transitions. Word has length 116 [2021-01-07 05:10:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:15,453 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 720 transitions. [2021-01-07 05:10:15,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:10:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 720 transitions. [2021-01-07 05:10:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-07 05:10:15,455 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:15,455 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1] [2021-01-07 05:10:15,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:15,671 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1525320163, now seen corresponding path program 29 times [2021-01-07 05:10:15,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:15,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022807165] [2021-01-07 05:10:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:17,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022807165] [2021-01-07 05:10:17,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064662580] [2021-01-07 05:10:17,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:18,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-07 05:10:18,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:18,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:10:18,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:18,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:18,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:18,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:18,521 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:18,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:10:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:18,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:18,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-01-07 05:10:18,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701207862] [2021-01-07 05:10:18,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:10:18,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:18,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:10:18,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:10:18,839 INFO L87 Difference]: Start difference. First operand 602 states and 720 transitions. Second operand 32 states. [2021-01-07 05:10:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:10:35,687 INFO L93 Difference]: Finished difference Result 1172 states and 1380 transitions. [2021-01-07 05:10:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:10:35,688 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 120 [2021-01-07 05:10:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:10:35,693 INFO L225 Difference]: With dead ends: 1172 [2021-01-07 05:10:35,693 INFO L226 Difference]: Without dead ends: 1172 [2021-01-07 05:10:35,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:10:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-01-07 05:10:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 622. [2021-01-07 05:10:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2021-01-07 05:10:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 744 transitions. [2021-01-07 05:10:35,701 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 744 transitions. Word has length 120 [2021-01-07 05:10:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:10:35,701 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 744 transitions. [2021-01-07 05:10:35,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:10:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 744 transitions. [2021-01-07 05:10:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-01-07 05:10:35,703 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:10:35,703 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1] [2021-01-07 05:10:35,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:10:35,923 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:10:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:10:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1829926112, now seen corresponding path program 30 times [2021-01-07 05:10:35,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:10:35,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440207105] [2021-01-07 05:10:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:10:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:10:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:37,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440207105] [2021-01-07 05:10:37,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093568999] [2021-01-07 05:10:37,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:10:43,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-01-07 05:10:43,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:10:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-07 05:10:43,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:10:43,050 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:10:43,051 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:10:43,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:10:43,065 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:10:43,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:10:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:10:47,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:10:47,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33] total 64 [2021-01-07 05:10:47,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120536930] [2021-01-07 05:10:47,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-07 05:10:47,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:10:47,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-07 05:10:47,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:10:47,941 INFO L87 Difference]: Start difference. First operand 622 states and 744 transitions. Second operand 65 states.