/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-patterns/array30_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:58:03,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:58:03,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:58:03,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:58:03,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:58:03,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:58:03,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:58:03,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:58:03,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:58:04,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:58:04,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:58:04,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:58:04,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:58:04,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:58:04,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:58:04,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:58:04,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:58:04,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:58:04,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:58:04,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:58:04,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:58:04,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:58:04,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:58:04,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:58:04,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:58:04,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:58:04,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:58:04,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:58:04,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 10:58:04,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:58:04,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:58:04,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:58:04,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:58:04,130 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:58:04,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:58:04,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:58:04,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:58:04,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:58:04,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:58:04,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:58:04,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:58:04,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:58:04,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:58:04,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:58:04,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:58:04,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:58:04,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:58:04,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:58:04,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:58:04,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:58:04,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:58:04,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:58:04,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:58:04,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:58:04,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:58:04,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:58:04,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:58:04,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:58:04,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:58:04,628 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:58:04,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array30_pattern.c [2021-01-06 10:58:04,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e1ab9e70e/1a5f0fd8340f4a2591e90575bdeac26c/FLAG4c62c65b0 [2021-01-06 10:58:05,342 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:58:05,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c [2021-01-06 10:58:05,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e1ab9e70e/1a5f0fd8340f4a2591e90575bdeac26c/FLAG4c62c65b0 [2021-01-06 10:58:05,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e1ab9e70e/1a5f0fd8340f4a2591e90575bdeac26c [2021-01-06 10:58:05,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:58:05,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:58:05,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:58:05,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:58:05,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:58:05,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:58:05" (1/1) ... [2021-01-06 10:58:05,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4075e29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:05, skipping insertion in model container [2021-01-06 10:58:05,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:58:05" (1/1) ... [2021-01-06 10:58:05,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:58:05,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:58:05,950 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-patterns/array30_pattern.c[1189,1202] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2021-01-06 10:58:05,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:58:05,998 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:58:06,011 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-patterns/array30_pattern.c[1189,1202] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2021-01-06 10:58:06,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:58:06,039 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:58:06,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06 WrapperNode [2021-01-06 10:58:06,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:58:06,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:58:06,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:58:06,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:58:06,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:58:06,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:58:06,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:58:06,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:58:06,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... [2021-01-06 10:58:06,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:58:06,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:58:06,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:58:06,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:58:06,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:58:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:58:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:58:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:58:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:58:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:58:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:58:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 10:58:06,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:58:06,649 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 10:58:06,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:58:06 BoogieIcfgContainer [2021-01-06 10:58:06,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:58:06,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:58:06,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:58:06,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:58:06,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:58:05" (1/3) ... [2021-01-06 10:58:06,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e8041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:58:06, skipping insertion in model container [2021-01-06 10:58:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:58:06" (2/3) ... [2021-01-06 10:58:06,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e8041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:58:06, skipping insertion in model container [2021-01-06 10:58:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:58:06" (3/3) ... [2021-01-06 10:58:06,664 INFO L111 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2021-01-06 10:58:06,672 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:58:06,679 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:58:06,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:58:06,753 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:58:06,753 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:58:06,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:58:06,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:58:06,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:58:06,754 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:58:06,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:58:06,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:58:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 10:58:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 10:58:06,776 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:58:06,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:58:06,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:58:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:58:06,783 INFO L82 PathProgramCache]: Analyzing trace with hash -409725857, now seen corresponding path program 1 times [2021-01-06 10:58:06,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:58:06,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153100448] [2021-01-06 10:58:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:58:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:58:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:58:06,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153100448] [2021-01-06 10:58:06,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:58:06,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:58:06,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985937122] [2021-01-06 10:58:06,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:58:06,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:58:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:58:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:58:06,994 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 10:58:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:58:07,012 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2021-01-06 10:58:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:58:07,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 10:58:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:58:07,023 INFO L225 Difference]: With dead ends: 43 [2021-01-06 10:58:07,023 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 10:58:07,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:58:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 10:58:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 10:58:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 10:58:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-01-06 10:58:07,065 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2021-01-06 10:58:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:58:07,066 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-01-06 10:58:07,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:58:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-01-06 10:58:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 10:58:07,067 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:58:07,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:58:07,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:58:07,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:58:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:58:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1934801258, now seen corresponding path program 1 times [2021-01-06 10:58:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:58:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121081221] [2021-01-06 10:58:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:58:07,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:58:07,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633553676] [2021-01-06 10:58:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:58:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 10:58:07,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:58:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:58:07,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121081221] [2021-01-06 10:58:07,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:58:07,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633553676] [2021-01-06 10:58:07,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:58:07,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 10:58:07,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326245128] [2021-01-06 10:58:07,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:58:07,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:58:07,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:58:07,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:58:07,326 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 5 states. [2021-01-06 10:58:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:58:07,450 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-01-06 10:58:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:58:07,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 10:58:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:58:07,451 INFO L225 Difference]: With dead ends: 38 [2021-01-06 10:58:07,451 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 10:58:07,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:58:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 10:58:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-01-06 10:58:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 10:58:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-01-06 10:58:07,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2021-01-06 10:58:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:58:07,460 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-01-06 10:58:07,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:58:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-01-06 10:58:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 10:58:07,461 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:58:07,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:58:07,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 10:58:07,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:58:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:58:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash 761451258, now seen corresponding path program 1 times [2021-01-06 10:58:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:58:07,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331446070] [2021-01-06 10:58:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:58:07,694 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:58:07,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809282140] [2021-01-06 10:58:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:58:07,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:58:07,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:58:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:58:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331446070] [2021-01-06 10:58:07,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:58:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809282140] [2021-01-06 10:58:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:58:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:58:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969253424] [2021-01-06 10:58:07,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:58:07,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:58:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:58:07,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:58:07,788 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2021-01-06 10:58:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:58:07,847 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-01-06 10:58:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:58:07,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 10:58:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:58:07,849 INFO L225 Difference]: With dead ends: 43 [2021-01-06 10:58:07,849 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:58:07,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:58:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:58:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-01-06 10:58:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 10:58:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-01-06 10:58:07,857 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-01-06 10:58:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:58:07,857 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-01-06 10:58:07,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:58:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-01-06 10:58:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 10:58:07,858 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:58:07,858 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, 1] [2021-01-06 10:58:08,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:08,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:58:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:58:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1879431543, now seen corresponding path program 1 times [2021-01-06 10:58:08,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:58:08,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228537769] [2021-01-06 10:58:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:58:08,092 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:58:08,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595674357] [2021-01-06 10:58:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:58:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 10:58:08,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:58:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:58:08,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228537769] [2021-01-06 10:58:08,261 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:58:08,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595674357] [2021-01-06 10:58:08,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:58:08,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 10:58:08,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677718894] [2021-01-06 10:58:08,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:58:08,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:58:08,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:58:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:58:08,263 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2021-01-06 10:58:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:58:08,366 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-01-06 10:58:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:58:08,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-01-06 10:58:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:58:08,368 INFO L225 Difference]: With dead ends: 55 [2021-01-06 10:58:08,368 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 10:58:08,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:58:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 10:58:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2021-01-06 10:58:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 10:58:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-01-06 10:58:08,376 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-01-06 10:58:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:58:08,376 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-01-06 10:58:08,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:58:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-01-06 10:58:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 10:58:08,377 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:58:08,378 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, 1] [2021-01-06 10:58:08,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:08,594 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:58:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:58:08,596 INFO L82 PathProgramCache]: Analyzing trace with hash 858363189, now seen corresponding path program 1 times [2021-01-06 10:58:08,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:58:08,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005197016] [2021-01-06 10:58:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:58:08,611 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:58:08,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402427905] [2021-01-06 10:58:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:58:08,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 10:58:08,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:58:08,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:58:08,773 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:58:08,911 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 10:58:08,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:58:08,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:58:08,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:58:08,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:34 [2021-01-06 10:58:09,095 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-01-06 10:58:09,098 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:58:09,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:58:09,107 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:58:09,107 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:13 [2021-01-06 10:58:09,168 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:58:09,180 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:58:09,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005197016] [2021-01-06 10:58:09,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:58:09,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402427905] [2021-01-06 10:58:09,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 10:58:09,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:58:09,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 10:58:09,186 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 10:58:09,186 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 10:58:09,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:58:09,423 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 10:58:09,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 10:58:09 BoogieIcfgContainer [2021-01-06 10:58:09,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 10:58:09,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 10:58:09,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 10:58:09,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 10:58:09,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:58:06" (3/4) ... [2021-01-06 10:58:09,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 10:58:09,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 10:58:09,430 INFO L168 Benchmark]: Toolchain (without parser) took 3712.59 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 136.8 MB in the beginning and 103.5 MB in the end (delta: 33.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,431 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 10:58:09,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.88 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 126.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,433 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 162.5 MB. Free memory was 124.9 MB in the beginning and 123.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,434 INFO L168 Benchmark]: RCFGBuilder took 536.85 ms. Allocated memory is still 162.5 MB. Free memory was 123.7 MB in the beginning and 138.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,435 INFO L168 Benchmark]: TraceAbstraction took 2770.05 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 138.0 MB in the beginning and 103.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 68.6 MB. Max. memory is 8.0 GB. [2021-01-06 10:58:09,436 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 195.0 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 10:58:09,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.88 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 126.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 162.5 MB. Free memory was 124.9 MB in the beginning and 123.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 536.85 ms. Allocated memory is still 162.5 MB. Free memory was 123.7 MB in the beginning and 138.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2770.05 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 138.0 MB in the beginning and 103.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 68.6 MB. Max. memory is 8.0 GB. * Witness Printer took 4.43 ms. Allocated memory is still 195.0 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L33] signed long long ARR_SIZE ; [L45] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L27] COND FALSE !(!cond) [L48] int array[ARR_SIZE][ARR_SIZE] ; [L50] int row = 0, column = 0 ; [L51] signed long long sum = 0 ; [L53] row=0 [L53] COND TRUE row idx2) [L40] return (idx2 - idx1) ; [L55] array[row][column] = diff(row,column) [L54] column++ [L54] COND FALSE !(column