/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/nla-digbench-scaling/sqrt1-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 18:09:25,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 18:09:25,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 18:09:25,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 18:09:25,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 18:09:25,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 18:09:25,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 18:09:25,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 18:09:25,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 18:09:25,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 18:09:25,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 18:09:25,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 18:09:25,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 18:09:25,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 18:09:25,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 18:09:25,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 18:09:25,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 18:09:25,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 18:09:25,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 18:09:25,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 18:09:25,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 18:09:25,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 18:09:25,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 18:09:25,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 18:09:25,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 18:09:25,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 18:09:25,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 18:09:25,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 18:09:25,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 18:09:25,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 18:09:25,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 18:09:25,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 18:09:25,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 18:09:25,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 18:09:25,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 18:09:25,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 18:09:25,875 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 18:09:25,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 18:09:25,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 18:09:25,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 18:09:25,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 18:09:25,926 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 18:09:25,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 18:09:25,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 18:09:25,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 18:09:25,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 18:09:25,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 18:09:25,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 18:09:25,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 18:09:25,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 18:09:25,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 18:09:25,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 18:09:25,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 18:09:25,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 18:09:25,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 18:09:25,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 18:09:25,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 18:09:25,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 18:09:26,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 18:09:26,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 18:09:26,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 18:09:26,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 18:09:26,417 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 18:09:26,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2021-01-06 18:09:26,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffe991b41/dabd481bb5244a93a4dc9aed11d91bb5/FLAGf2c962ff4 [2021-01-06 18:09:27,130 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 18:09:27,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2021-01-06 18:09:27,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffe991b41/dabd481bb5244a93a4dc9aed11d91bb5/FLAGf2c962ff4 [2021-01-06 18:09:27,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ffe991b41/dabd481bb5244a93a4dc9aed11d91bb5 [2021-01-06 18:09:27,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 18:09:27,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 18:09:27,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 18:09:27,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 18:09:27,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 18:09:27,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da31aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27, skipping insertion in model container [2021-01-06 18:09:27,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 18:09:27,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 18:09:27,776 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/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 18:09:27,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:09:27,824 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 18:09:27,839 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/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 18:09:27,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:09:27,864 INFO L208 MainTranslator]: Completed translation [2021-01-06 18:09:27,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27 WrapperNode [2021-01-06 18:09:27,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 18:09:27,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 18:09:27,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 18:09:27,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 18:09:27,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 18:09:27,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 18:09:27,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 18:09:27,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 18:09:27,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (1/1) ... [2021-01-06 18:09:27,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 18:09:27,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 18:09:27,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 18:09:27,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 18:09:27,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (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 18:09:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 18:09:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 18:09:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 18:09:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 18:09:28,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 18:09:28,326 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 18:09:28,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:28 BoogieIcfgContainer [2021-01-06 18:09:28,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 18:09:28,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 18:09:28,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 18:09:28,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 18:09:28,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 06:09:27" (1/3) ... [2021-01-06 18:09:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4027e830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:09:28, skipping insertion in model container [2021-01-06 18:09:28,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:27" (2/3) ... [2021-01-06 18:09:28,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4027e830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:09:28, skipping insertion in model container [2021-01-06 18:09:28,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:28" (3/3) ... [2021-01-06 18:09:28,340 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound10.c [2021-01-06 18:09:28,349 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 18:09:28,355 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 18:09:28,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 18:09:28,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 18:09:28,410 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 18:09:28,410 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 18:09:28,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 18:09:28,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 18:09:28,411 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 18:09:28,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 18:09:28,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 18:09:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-01-06 18:09:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 18:09:28,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:28,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 18:09:28,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-01-06 18:09:28,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:28,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103679723] [2021-01-06 18:09:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:28,645 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 18:09:28,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103679723] [2021-01-06 18:09:28,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:28,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 18:09:28,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286963253] [2021-01-06 18:09:28,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 18:09:28,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:28,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 18:09:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 18:09:28,671 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-01-06 18:09:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:28,694 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-01-06 18:09:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 18:09:28,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-01-06 18:09:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:28,705 INFO L225 Difference]: With dead ends: 62 [2021-01-06 18:09:28,705 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 18:09:28,708 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 18:09:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 18:09:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-01-06 18:09:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 18:09:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-01-06 18:09:28,746 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-01-06 18:09:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:28,747 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-01-06 18:09:28,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 18:09:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-01-06 18:09:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 18:09:28,748 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:28,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 18:09:28,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 18:09:28,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 18:09:28,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:28,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702503727] [2021-01-06 18:09:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:28,871 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 18:09:28,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702503727] [2021-01-06 18:09:28,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:28,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 18:09:28,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415405216] [2021-01-06 18:09:28,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 18:09:28,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:28,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 18:09:28,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 18:09:28,877 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2021-01-06 18:09:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:29,075 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-01-06 18:09:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 18:09:29,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 18:09:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:29,077 INFO L225 Difference]: With dead ends: 55 [2021-01-06 18:09:29,078 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 18:09:29,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:09:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 18:09:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2021-01-06 18:09:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-06 18:09:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-01-06 18:09:29,089 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2021-01-06 18:09:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:29,090 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-01-06 18:09:29,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 18:09:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-01-06 18:09:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 18:09:29,091 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:29,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:29,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 18:09:29,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-01-06 18:09:29,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:29,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358321494] [2021-01-06 18:09:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:29,110 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:29,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131884097] [2021-01-06 18:09:29,110 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 18:09:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 18:09:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:29,319 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 18:09:29,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358321494] [2021-01-06 18:09:29,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:29,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131884097] [2021-01-06 18:09:29,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:29,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 18:09:29,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058152814] [2021-01-06 18:09:29,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 18:09:29,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:29,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 18:09:29,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:09:29,324 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2021-01-06 18:09:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:29,469 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-01-06 18:09:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 18:09:29,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 18:09:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:29,471 INFO L225 Difference]: With dead ends: 54 [2021-01-06 18:09:29,471 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 18:09:29,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 18:09:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-01-06 18:09:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 18:09:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-01-06 18:09:29,480 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2021-01-06 18:09:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:29,480 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-01-06 18:09:29,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 18:09:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-01-06 18:09:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 18:09:29,481 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:29,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:29,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 18:09:29,697 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2021-01-06 18:09:29,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:29,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173678614] [2021-01-06 18:09:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:29,712 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:29,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389581560] [2021-01-06 18:09:29,713 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 18:09:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 18:09:29,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:29,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173678614] [2021-01-06 18:09:29,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:29,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389581560] [2021-01-06 18:09:29,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:29,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 18:09:29,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440561141] [2021-01-06 18:09:29,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 18:09:29,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 18:09:29,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 18:09:29,955 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2021-01-06 18:09:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:30,114 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-01-06 18:09:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:09:30,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 18:09:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:30,117 INFO L225 Difference]: With dead ends: 62 [2021-01-06 18:09:30,117 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 18:09:30,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 18:09:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-01-06 18:09:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 18:09:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 18:09:30,128 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-01-06 18:09:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:30,128 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 18:09:30,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 18:09:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 18:09:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 18:09:30,129 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:30,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:30,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:30,349 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:30,351 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2021-01-06 18:09:30,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:30,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473621264] [2021-01-06 18:09:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:30,369 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:30,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928426918] [2021-01-06 18:09:30,373 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 18:09:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:30,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 18:09:30,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:30,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473621264] [2021-01-06 18:09:30,607 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:30,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928426918] [2021-01-06 18:09:30,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:30,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 18:09:30,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478020059] [2021-01-06 18:09:30,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:09:30,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:30,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:09:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:30,613 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2021-01-06 18:09:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:30,858 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-01-06 18:09:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:09:30,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 18:09:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:30,860 INFO L225 Difference]: With dead ends: 61 [2021-01-06 18:09:30,860 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 18:09:30,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:09:30,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 18:09:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-01-06 18:09:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-06 18:09:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-01-06 18:09:30,871 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2021-01-06 18:09:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:30,871 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-01-06 18:09:30,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:09:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-01-06 18:09:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 18:09:30,872 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:30,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 18:09:31,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:31,086 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:31,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1785416430, now seen corresponding path program 2 times [2021-01-06 18:09:31,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:31,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372915309] [2021-01-06 18:09:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:31,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:31,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351527249] [2021-01-06 18:09:31,105 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 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 18:09:31,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 18:09:31,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:09:31,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 18:09:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:31,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372915309] [2021-01-06 18:09:31,303 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:31,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351527249] [2021-01-06 18:09:31,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:31,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 18:09:31,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805296658] [2021-01-06 18:09:31,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 18:09:31,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:31,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 18:09:31,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:09:31,306 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2021-01-06 18:09:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:31,484 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-01-06 18:09:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 18:09:31,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-01-06 18:09:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:31,486 INFO L225 Difference]: With dead ends: 70 [2021-01-06 18:09:31,486 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 18:09:31,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:09:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 18:09:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-01-06 18:09:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 18:09:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-01-06 18:09:31,498 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2021-01-06 18:09:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:31,499 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-01-06 18:09:31,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 18:09:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-01-06 18:09:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 18:09:31,500 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:31,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 18:09:31,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:31,716 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2021-01-06 18:09:31,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:31,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893079057] [2021-01-06 18:09:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:31,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:31,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747038392] [2021-01-06 18:09:31,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:31,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 18:09:31,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:09:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 18:09:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893079057] [2021-01-06 18:09:31,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747038392] [2021-01-06 18:09:31,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:31,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 18:09:31,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896457221] [2021-01-06 18:09:31,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:09:31,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:31,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:09:31,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:31,934 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2021-01-06 18:09:32,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:32,107 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-01-06 18:09:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 18:09:32,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 18:09:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:32,108 INFO L225 Difference]: With dead ends: 67 [2021-01-06 18:09:32,108 INFO L226 Difference]: Without dead ends: 63 [2021-01-06 18:09:32,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:09:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-06 18:09:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2021-01-06 18:09:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 18:09:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-01-06 18:09:32,118 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2021-01-06 18:09:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:32,118 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-01-06 18:09:32,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:09:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-01-06 18:09:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 18:09:32,119 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:32,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 18:09:32,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 18:09:32,333 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2021-01-06 18:09:32,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:32,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235450323] [2021-01-06 18:09:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:32,347 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81301093] [2021-01-06 18:09:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:32,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 18:09:32,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:32,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235450323] [2021-01-06 18:09:32,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:32,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81301093] [2021-01-06 18:09:32,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:32,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 18:09:32,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933568648] [2021-01-06 18:09:32,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 18:09:32,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:32,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 18:09:32,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 18:09:32,544 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2021-01-06 18:09:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:32,693 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-01-06 18:09:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 18:09:32,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2021-01-06 18:09:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:32,696 INFO L225 Difference]: With dead ends: 65 [2021-01-06 18:09:32,696 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 18:09:32,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 18:09:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 18:09:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2021-01-06 18:09:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 18:09:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-01-06 18:09:32,717 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 26 [2021-01-06 18:09:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:32,720 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-01-06 18:09:32,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 18:09:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-01-06 18:09:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 18:09:32,722 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:32,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-01-06 18:09:32,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:32,937 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1822162560, now seen corresponding path program 3 times [2021-01-06 18:09:32,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:32,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942185948] [2021-01-06 18:09:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:32,958 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:32,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239134587] [2021-01-06 18:09:32,959 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:33,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 18:09:33,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:09:33,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 18:09:33,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 18:09:33,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942185948] [2021-01-06 18:09:33,105 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:33,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239134587] [2021-01-06 18:09:33,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:33,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 18:09:33,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680372555] [2021-01-06 18:09:33,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 18:09:33,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:33,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 18:09:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 18:09:33,107 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2021-01-06 18:09:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:33,166 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-01-06 18:09:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 18:09:33,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-01-06 18:09:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:33,170 INFO L225 Difference]: With dead ends: 52 [2021-01-06 18:09:33,170 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 18:09:33,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:09:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 18:09:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-06 18:09:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 18:09:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-01-06 18:09:33,194 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 30 [2021-01-06 18:09:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:33,194 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-01-06 18:09:33,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 18:09:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-01-06 18:09:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 18:09:33,198 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:33,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-01-06 18:09:33,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:33,414 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:33,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:33,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1248592163, now seen corresponding path program 3 times [2021-01-06 18:09:33,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:33,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745316223] [2021-01-06 18:09:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:33,427 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:33,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449881043] [2021-01-06 18:09:33,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:33,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 18:09:33,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:09:33,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 18:09:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:35,585 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 2 c_ULTIMATE.start_main_~a~0))) (and (= (+ .cse0 1) c_ULTIMATE.start_main_~t~0) (let ((.cse1 (= (+ (* 2 c_ULTIMATE.start_main_~t~0) (* c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) 1) (* 4 c_ULTIMATE.start_main_~s~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) (= c_ULTIMATE.start_main_~s~0 (+ (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) .cse0 1)))) is different from false [2021-01-06 18:09:46,347 WARN L197 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 18:09:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 18:09:46,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745316223] [2021-01-06 18:09:46,386 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:46,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449881043] [2021-01-06 18:09:46,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:46,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 18:09:46,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051479662] [2021-01-06 18:09:46,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 18:09:46,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 18:09:46,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=51, Unknown=2, NotChecked=14, Total=90 [2021-01-06 18:09:46,388 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2021-01-06 18:09:55,288 WARN L197 SmtUtils]: Spent 8.89 s on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2021-01-06 18:11:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:11:03,882 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2021-01-06 18:11:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 18:11:03,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2021-01-06 18:11:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:11:03,883 INFO L225 Difference]: With dead ends: 55 [2021-01-06 18:11:03,884 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 18:11:03,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=4, NotChecked=20, Total=156 [2021-01-06 18:11:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 18:11:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-01-06 18:11:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 18:11:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-01-06 18:11:03,895 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 32 [2021-01-06 18:11:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:11:03,895 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-01-06 18:11:03,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 18:11:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-01-06 18:11:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 18:11:03,896 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:11:03,897 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:11:04,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 18:11:04,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:11:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:11:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash 26039134, now seen corresponding path program 1 times [2021-01-06 18:11:04,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:11:04,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040890895] [2021-01-06 18:11:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:11:04,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:11:04,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461719718] [2021-01-06 18:11:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:11:04,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 18:11:04,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:11:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:11:04,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040890895] [2021-01-06 18:11:04,289 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:11:04,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461719718] [2021-01-06 18:11:04,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:11:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 18:11:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741989805] [2021-01-06 18:11:04,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:11:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:11:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:11:04,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:11:04,298 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 7 states. [2021-01-06 18:11:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:11:04,370 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-01-06 18:11:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 18:11:04,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2021-01-06 18:11:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:11:04,372 INFO L225 Difference]: With dead ends: 62 [2021-01-06 18:11:04,372 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 18:11:04,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 18:11:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 18:11:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-06 18:11:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 18:11:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-01-06 18:11:04,381 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 33 [2021-01-06 18:11:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:11:04,382 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-01-06 18:11:04,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:11:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-01-06 18:11:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 18:11:04,383 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:11:04,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 18:11:04,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:04,584 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:11:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:11:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 2 times [2021-01-06 18:11:04,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:11:04,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239867497] [2021-01-06 18:11:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:11:04,608 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:11:04,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999941029] [2021-01-06 18:11:04,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:04,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 18:11:04,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:11:04,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 18:11:04,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:11:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-06 18:11:04,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239867497] [2021-01-06 18:11:04,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:11:04,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999941029] [2021-01-06 18:11:04,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:11:04,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 18:11:04,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017233571] [2021-01-06 18:11:04,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:11:04,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:11:04,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:11:04,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:11:04,845 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 7 states. [2021-01-06 18:11:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:11:31,217 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-01-06 18:11:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 18:11:31,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-01-06 18:11:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:11:31,219 INFO L225 Difference]: With dead ends: 53 [2021-01-06 18:11:31,219 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 18:11:31,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 18:11:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 18:11:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-01-06 18:11:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 18:11:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-01-06 18:11:31,229 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2021-01-06 18:11:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:11:31,229 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-01-06 18:11:31,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:11:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-01-06 18:11:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 18:11:31,231 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:11:31,231 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:11:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:31,437 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:11:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:11:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1133040244, now seen corresponding path program 2 times [2021-01-06 18:11:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:11:31,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551894346] [2021-01-06 18:11:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:11:31,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:11:31,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247979430] [2021-01-06 18:11:31,449 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:31,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 18:11:31,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:11:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 18:11:31,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:11:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:11:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551894346] [2021-01-06 18:11:31,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:11:31,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247979430] [2021-01-06 18:11:31,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:11:31,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 18:11:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680201439] [2021-01-06 18:11:31,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 18:11:31,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:11:31,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 18:11:31,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 18:11:31,639 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 8 states. [2021-01-06 18:11:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:11:31,711 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2021-01-06 18:11:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 18:11:31,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-01-06 18:11:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:11:31,713 INFO L225 Difference]: With dead ends: 76 [2021-01-06 18:11:31,713 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 18:11:31,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-01-06 18:11:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 18:11:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-01-06 18:11:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 18:11:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-01-06 18:11:31,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 41 [2021-01-06 18:11:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:11:31,725 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-01-06 18:11:31,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 18:11:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-01-06 18:11:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 18:11:31,726 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:11:31,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:11:31,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 18:11:31,941 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:11:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:11:31,942 INFO L82 PathProgramCache]: Analyzing trace with hash -977613196, now seen corresponding path program 1 times [2021-01-06 18:11:31,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:11:31,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329152959] [2021-01-06 18:11:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:11:31,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:11:31,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245545003] [2021-01-06 18:11:31,958 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:11:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:11:32,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 18:11:32,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:11:32,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329152959] [2021-01-06 18:11:32,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:11:32,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245545003] [2021-01-06 18:11:32,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 18:11:32,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:11:32,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 18:11:32,100 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 18:11:32,101 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 18:11:32,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 18:11:32,343 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 18:11:32,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 06:11:32 BoogieIcfgContainer [2021-01-06 18:11:32,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 18:11:32,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 18:11:32,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 18:11:32,344 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 18:11:32,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:28" (3/4) ... [2021-01-06 18:11:32,352 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 18:11:32,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 18:11:32,354 INFO L168 Benchmark]: Toolchain (without parser) took 124843.76 ms. Allocated memory was 156.2 MB in the beginning and 216.0 MB in the end (delta: 59.8 MB). Free memory was 131.0 MB in the beginning and 156.2 MB in the end (delta: -25.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,354 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 18:11:32,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.30 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 121.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.31 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,356 INFO L168 Benchmark]: Boogie Preprocessor took 26.15 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,356 INFO L168 Benchmark]: RCFGBuilder took 392.19 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 103.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,357 INFO L168 Benchmark]: TraceAbstraction took 124012.84 ms. Allocated memory was 156.2 MB in the beginning and 216.0 MB in the end (delta: 59.8 MB). Free memory was 103.3 MB in the beginning and 156.7 MB in the end (delta: -53.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-01-06 18:11:32,357 INFO L168 Benchmark]: Witness Printer took 8.45 ms. Allocated memory is still 216.0 MB. Free memory was 156.7 MB in the beginning and 156.2 MB in the end (delta: 522.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 18:11:32,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.30 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 121.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.31 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.15 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 392.19 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 103.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 124012.84 ms. Allocated memory was 156.2 MB in the beginning and 216.0 MB in the end (delta: 59.8 MB). Free memory was 103.3 MB in the beginning and 156.7 MB in the end (delta: -53.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * Witness Printer took 8.45 ms. Allocated memory is still 216.0 MB. Free memory was 156.7 MB in the beginning and 156.2 MB in the end (delta: 522.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: 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: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(s <= n) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 123.9s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 105.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 259 SDtfs, 313 SDslu, 607 SDs, 0 SdLazy, 636 SolverSat, 183 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 226 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 63 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 292 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 38681 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1114 ConjunctsInSsa, 203 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 113/265 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...