/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/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:04:19,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:04:19,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:04:19,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:04:19,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:04:19,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:04:19,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:04:19,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:04:19,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:04:19,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:04:19,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:04:19,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:04:19,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:04:19,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:04:19,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:04:19,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:04:19,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:04:19,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:04:19,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:04:19,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:04:19,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:04:19,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:04:19,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:04:19,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:04:19,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:04:19,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:04:19,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:04:19,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:04:19,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:04:19,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:04:19,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:04:19,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:04:19,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:04:19,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:04:19,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:04:19,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:04:19,935 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 17:04:19,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:04:19,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:04:19,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:04:19,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:04:19,965 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:04:19,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:04:19,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:04:19,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:04:19,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:04:19,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:04:19,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:04:19,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:04:19,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:04:19,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:04:19,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:04:19,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:04:19,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:04:19,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:04:19,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:04:19,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:04:19,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:04:19,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:04:19,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:04:19,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:04:19,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:04:19,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:04:20,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:04:20,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:04:20,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:04:20,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:04:20,392 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:04:20,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-01-06 17:04:20,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/162f5078b/3bad231225334f3fa40c361a386ed7cb/FLAGd18efb8b7 [2021-01-06 17:04:21,104 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:04:21,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-01-06 17:04:21,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/162f5078b/3bad231225334f3fa40c361a386ed7cb/FLAGd18efb8b7 [2021-01-06 17:04:21,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/162f5078b/3bad231225334f3fa40c361a386ed7cb [2021-01-06 17:04:21,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:04:21,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:04:21,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:04:21,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:04:21,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:04:21,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1868fc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21, skipping insertion in model container [2021-01-06 17:04:21,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:04:21,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:04:21,762 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/loops-crafted-1/nested5-1.c[321,334] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] [2021-01-06 17:04:21,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:04:21,802 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:04:21,817 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/loops-crafted-1/nested5-1.c[321,334] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] [2021-01-06 17:04:21,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:04:21,858 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:04:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21 WrapperNode [2021-01-06 17:04:21,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:04:21,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:04:21,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:04:21,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:04:21,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:04:21,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:04:21,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:04:21,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:04:21,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (1/1) ... [2021-01-06 17:04:21,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:04:21,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:04:21,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:04:21,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:04:21,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (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 17:04:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:04:22,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:04:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:04:22,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:04:22,342 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 17:04:22,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:04:22 BoogieIcfgContainer [2021-01-06 17:04:22,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:04:22,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:04:22,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:04:22,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:04:22,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:04:21" (1/3) ... [2021-01-06 17:04:22,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925a84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:04:22, skipping insertion in model container [2021-01-06 17:04:22,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:04:21" (2/3) ... [2021-01-06 17:04:22,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925a84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:04:22, skipping insertion in model container [2021-01-06 17:04:22,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:04:22" (3/3) ... [2021-01-06 17:04:22,353 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-01-06 17:04:22,360 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:04:22,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 17:04:22,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 17:04:22,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:04:22,416 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:04:22,417 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:04:22,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:04:22,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:04:22,418 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:04:22,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:04:22,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:04:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 17:04:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:04:22,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:04:22,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:04:22,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:04:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:04:22,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1296464707, now seen corresponding path program 1 times [2021-01-06 17:04:22,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:04:22,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525365553] [2021-01-06 17:04:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:04:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:04:22,889 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 17:04:22,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525365553] [2021-01-06 17:04:22,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:04:22,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:04:22,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427332668] [2021-01-06 17:04:22,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:04:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:04:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:04:22,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:04:22,925 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2021-01-06 17:04:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:04:23,000 INFO L93 Difference]: Finished difference Result 51 states and 80 transitions. [2021-01-06 17:04:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:04:23,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 17:04:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:04:23,015 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:04:23,016 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:04:23,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:04:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:04:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-01-06 17:04:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:04:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-01-06 17:04:23,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2021-01-06 17:04:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:04:23,067 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-01-06 17:04:23,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:04:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-01-06 17:04:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:04:23,068 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:04:23,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:04:23,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:04:23,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:04:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:04:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash -308834241, now seen corresponding path program 1 times [2021-01-06 17:04:23,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:04:23,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002059879] [2021-01-06 17:04:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:04:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:04:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:04:23,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002059879] [2021-01-06 17:04:23,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453649295] [2021-01-06 17:04:23,246 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 17:04:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:04:23,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:04:23,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:04:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:04:23,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:04:23,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-06 17:04:23,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072847449] [2021-01-06 17:04:23,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:04:23,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:04:23,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:04:23,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:04:23,352 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2021-01-06 17:04:23,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:04:23,384 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-01-06 17:04:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:04:23,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 17:04:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:04:23,386 INFO L225 Difference]: With dead ends: 42 [2021-01-06 17:04:23,386 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:04:23,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:04:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:04:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-01-06 17:04:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:04:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-01-06 17:04:23,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-01-06 17:04:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:04:23,393 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-01-06 17:04:23,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:04:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-01-06 17:04:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:04:23,394 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:04:23,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:04:23,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:04:23,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:04:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:04:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash -383728831, now seen corresponding path program 2 times [2021-01-06 17:04:23,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:04:23,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689796272] [2021-01-06 17:04:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:04:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:04:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:04:23,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689796272] [2021-01-06 17:04:23,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947860089] [2021-01-06 17:04:23,692 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 [2021-01-06 17:04:23,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:04:23,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:04:23,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:04:23,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:04:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:04:23,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:04:23,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-06 17:04:23,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586851085] [2021-01-06 17:04:23,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:04:23,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:04:23,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:04:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:04:23,831 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 6 states. [2021-01-06 17:04:23,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:04:23,874 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2021-01-06 17:04:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:04:23,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:04:23,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:04:23,876 INFO L225 Difference]: With dead ends: 46 [2021-01-06 17:04:23,876 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:04:23,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:04:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:04:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-01-06 17:04:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:04:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-01-06 17:04:23,882 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-01-06 17:04:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:04:23,882 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-01-06 17:04:23,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:04:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-01-06 17:04:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:04:23,883 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:04:23,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:04:24,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:04:24,098 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:04:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:04:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash 657014211, now seen corresponding path program 3 times [2021-01-06 17:04:24,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:04:24,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273451216] [2021-01-06 17:04:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:04:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:04:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:04:24,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273451216] [2021-01-06 17:04:24,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997811177] [2021-01-06 17:04:24,187 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 [2021-01-06 17:04:24,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:04:24,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:04:24,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:04:24,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:04:24,542 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-01-06 17:04:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:04:24,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:04:24,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-01-06 17:04:24,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809282140] [2021-01-06 17:04:24,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:04:24,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:04:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:04:24,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:04:24,554 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 6 states. [2021-01-06 17:04:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:04:25,087 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-01-06 17:04:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:04:25,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:04:25,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:04:25,088 INFO L225 Difference]: With dead ends: 36 [2021-01-06 17:04:25,088 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:04:25,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:04:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:04:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:04:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:04:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:04:25,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-06 17:04:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:04:25,091 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:04:25,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:04:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:04:25,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:04:25,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:04:25,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:04:25,436 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 17:04:25,575 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 17:04:25,687 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 17:04:25,838 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-01-06 17:04:25,924 INFO L189 CegarLoopUtils]: For program point L23-2(line 23) no Hoare annotation was computed. [2021-01-06 17:04:25,924 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (= ULTIMATE.start_main_~v~0 0)) [2021-01-06 17:04:25,925 INFO L189 CegarLoopUtils]: For program point L23-4(line 23) no Hoare annotation was computed. [2021-01-06 17:04:25,925 INFO L189 CegarLoopUtils]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-01-06 17:04:25,925 INFO L185 CegarLoopUtils]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1))))) [2021-01-06 17:04:25,925 INFO L189 CegarLoopUtils]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2021-01-06 17:04:25,925 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-01-06 17:04:25,926 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:04:25,926 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:04:25,926 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:04:25,926 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-01-06 17:04:25,926 INFO L189 CegarLoopUtils]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2021-01-06 17:04:25,927 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1))))) [2021-01-06 17:04:25,927 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:04:25,927 INFO L189 CegarLoopUtils]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-01-06 17:04:25,928 INFO L185 CegarLoopUtils]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1))))) [2021-01-06 17:04:25,928 INFO L192 CegarLoopUtils]: At program point L26(lines 12 27) the Hoare annotation is: true [2021-01-06 17:04:25,928 INFO L185 CegarLoopUtils]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1))))) [2021-01-06 17:04:25,928 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-01-06 17:04:25,929 INFO L185 CegarLoopUtils]: At program point L6-2(lines 1 27) the Hoare annotation is: (and (<= 10 (mod ULTIMATE.start_main_~v~0 4294967296)) (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1)))) [2021-01-06 17:04:25,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:04:25 BoogieIcfgContainer [2021-01-06 17:04:25,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:04:25,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:04:25,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:04:25,953 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:04:25,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:04:22" (3/4) ... [2021-01-06 17:04:25,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:04:25,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-06 17:04:25,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:04:25,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:04:25,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:04:26,020 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops-crafted-1/nested5-1.c-witness.graphml [2021-01-06 17:04:26,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:04:26,021 INFO L168 Benchmark]: Toolchain (without parser) took 4529.68 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 127.7 MB in the beginning and 110.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,022 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:04:26,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 118.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.75 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 116.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,024 INFO L168 Benchmark]: Boogie Preprocessor took 26.90 ms. Allocated memory is still 153.1 MB. Free memory was 116.4 MB in the beginning and 115.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,025 INFO L168 Benchmark]: RCFGBuilder took 417.61 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 126.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,026 INFO L168 Benchmark]: TraceAbstraction took 3606.72 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 126.5 MB in the beginning and 113.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,026 INFO L168 Benchmark]: Witness Printer took 67.26 ms. Allocated memory is still 184.5 MB. Free memory was 113.5 MB in the beginning and 110.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:04:26,030 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 125.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.38 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 118.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.75 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 116.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.90 ms. Allocated memory is still 153.1 MB. Free memory was 116.4 MB in the beginning and 115.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 417.61 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 126.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3606.72 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 126.5 MB in the beginning and 113.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * Witness Printer took 67.26 ms. Allocated memory is still 184.5 MB. Free memory was 113.5 MB in the beginning and 110.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((10 <= v % 4294967296 && cond < 4) && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 87 SDslu, 149 SDs, 0 SdLazy, 96 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 296 HoareAnnotationTreeSize, 7 FomulaSimplifications, 251 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 94 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 3518 SizeOfPredicates, 5 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...