/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:11:11,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:11:11,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:11:11,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:11:11,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:11:11,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:11:11,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:11:11,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:11:11,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:11:11,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:11:11,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:11:11,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:11:11,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:11:11,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:11:11,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:11:11,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:11:11,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:11:11,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:11:11,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:11:11,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:11:11,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:11:11,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:11:11,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:11:11,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:11:11,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:11:11,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:11:11,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:11:11,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:11:11,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:11:11,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:11:11,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:11:11,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:11:11,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:11:11,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:11:11,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:11:11,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:11:11,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:11:11,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:11:11,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:11:11,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:11:11,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:11:11,767 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:11:11,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:11:11,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:11:11,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:11:11,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:11:11,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:11:11,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:11:11,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:11:11,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:11:11,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:11:11,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:11:11,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:11:11,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:11:11,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:11:11,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:11:11,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:11:11,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:11:11,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:11:11,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:11:11,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:11:11,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:11:11,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:11:12,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:11:12,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:11:12,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:11:12,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:11:12,265 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:11:12,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sumt2.c [2020-12-23 07:11:12,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9ee09df65/6f1ccd10846b4b9aad66bb3d5b0a1d2e/FLAG62102082b [2020-12-23 07:11:12,991 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:11:12,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt2.c [2020-12-23 07:11:12,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9ee09df65/6f1ccd10846b4b9aad66bb3d5b0a1d2e/FLAG62102082b [2020-12-23 07:11:13,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9ee09df65/6f1ccd10846b4b9aad66bb3d5b0a1d2e [2020-12-23 07:11:13,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:11:13,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:11:13,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:11:13,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:11:13,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:11:13,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3898b2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13, skipping insertion in model container [2020-12-23 07:11:13,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:11:13,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:11:13,545 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt2.c[403,416] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] [2020-12-23 07:11:13,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:11:13,570 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:11:13,584 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt2.c[403,416] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~l~0,] [2020-12-23 07:11:13,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:11:13,606 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:11:13,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13 WrapperNode [2020-12-23 07:11:13,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:11:13,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:11:13,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:11:13,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:11:13,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:11:13,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:11:13,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:11:13,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:11:13,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (1/1) ... [2020-12-23 07:11:13,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:11:13,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:11:13,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:11:13,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:11:13,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (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 [2020-12-23 07:11:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:11:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:11:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:11:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:11:14,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:11:14,035 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 07:11:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:11:14 BoogieIcfgContainer [2020-12-23 07:11:14,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:11:14,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:11:14,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:11:14,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:11:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:11:13" (1/3) ... [2020-12-23 07:11:14,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d03aaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:11:14, skipping insertion in model container [2020-12-23 07:11:14,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:11:13" (2/3) ... [2020-12-23 07:11:14,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d03aaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:11:14, skipping insertion in model container [2020-12-23 07:11:14,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:11:14" (3/3) ... [2020-12-23 07:11:14,049 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-12-23 07:11:14,058 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:11:14,064 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 07:11:14,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 07:11:14,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:11:14,121 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:11:14,121 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:11:14,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:11:14,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:11:14,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:11:14,122 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:11:14,122 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:11:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-23 07:11:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:11:14,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:14,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:14,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2020-12-23 07:11:14,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:14,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379967125] [2020-12-23 07:11:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:14,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379967125] [2020-12-23 07:11:14,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:11:14,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:11:14,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525485572] [2020-12-23 07:11:14,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:11:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:11:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:11:14,435 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-23 07:11:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:14,453 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-23 07:11:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:11:14,454 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:11:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:14,463 INFO L225 Difference]: With dead ends: 22 [2020-12-23 07:11:14,464 INFO L226 Difference]: Without dead ends: 10 [2020-12-23 07:11:14,467 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 [2020-12-23 07:11:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-23 07:11:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-23 07:11:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-23 07:11:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-23 07:11:14,503 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-12-23 07:11:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:14,504 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-23 07:11:14,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:11:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-23 07:11:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:11:14,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:14,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:14,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:11:14,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:14,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:14,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1806977267, now seen corresponding path program 1 times [2020-12-23 07:11:14,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:14,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558243968] [2020-12-23 07:11:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:14,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558243968] [2020-12-23 07:11:14,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:11:14,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:11:14,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189769728] [2020-12-23 07:11:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:11:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:11:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:11:14,787 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-12-23 07:11:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:14,867 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-23 07:11:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:11:14,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:11:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:14,869 INFO L225 Difference]: With dead ends: 21 [2020-12-23 07:11:14,869 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 07:11:14,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:11:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 07:11:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 07:11:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 07:11:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-23 07:11:14,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2020-12-23 07:11:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:14,875 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-23 07:11:14,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:11:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-23 07:11:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:11:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:14,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:14,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:11:14,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash 78673311, now seen corresponding path program 1 times [2020-12-23 07:11:14,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:14,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353946219] [2020-12-23 07:11:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:15,268 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-12-23 07:11:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:15,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353946219] [2020-12-23 07:11:15,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81715957] [2020-12-23 07:11:15,406 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 [2020-12-23 07:11:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:11:15,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:15,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:11:15,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2020-12-23 07:11:15,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184466814] [2020-12-23 07:11:15,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:11:15,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:15,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:11:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:11:15,698 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 11 states. [2020-12-23 07:11:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:15,824 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-12-23 07:11:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:11:15,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-12-23 07:11:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:15,825 INFO L225 Difference]: With dead ends: 24 [2020-12-23 07:11:15,825 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 07:11:15,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:11:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 07:11:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-23 07:11:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 07:11:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-23 07:11:15,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-12-23 07:11:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:15,831 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-23 07:11:15,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:11:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-23 07:11:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:11:15,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:15,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:16,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:11:16,046 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash 300722865, now seen corresponding path program 1 times [2020-12-23 07:11:16,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:16,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984540940] [2020-12-23 07:11:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:16,606 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-12-23 07:11:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:16,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984540940] [2020-12-23 07:11:16,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210359672] [2020-12-23 07:11:16,737 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 [2020-12-23 07:11:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:16,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:11:16,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:16,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:11:16,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:11:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:17,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:11:17,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2020-12-23 07:11:17,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178156329] [2020-12-23 07:11:17,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 07:11:17,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 07:11:17,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:11:17,020 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2020-12-23 07:11:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:17,301 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-23 07:11:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:11:17,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2020-12-23 07:11:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:17,303 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:11:17,303 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 07:11:17,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:11:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 07:11:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 07:11:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 07:11:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-23 07:11:17,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-12-23 07:11:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:17,308 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-23 07:11:17,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 07:11:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-23 07:11:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:11:17,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:17,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:17,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:11:17,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1072091937, now seen corresponding path program 2 times [2020-12-23 07:11:17,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:17,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373188854] [2020-12-23 07:11:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:18,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373188854] [2020-12-23 07:11:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575877519] [2020-12-23 07:11:18,203 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 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 [2020-12-23 07:11:18,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:11:18,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:11:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 07:11:18,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:18,469 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:11:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:18,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:11:18,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2020-12-23 07:11:18,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368700896] [2020-12-23 07:11:18,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 07:11:18,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 07:11:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:11:18,504 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 20 states. [2020-12-23 07:11:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:19,229 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-12-23 07:11:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:11:19,229 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2020-12-23 07:11:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:19,230 INFO L225 Difference]: With dead ends: 31 [2020-12-23 07:11:19,230 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:11:19,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 07:11:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:11:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:11:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:11:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:11:19,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 07:11:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:19,234 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:11:19,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 07:11:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:11:19,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:11:19,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:11:19,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:11:19,603 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-23 07:11:19,608 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:11:19,608 INFO L189 CegarLoopUtils]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-12-23 07:11:19,608 INFO L189 CegarLoopUtils]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2020-12-23 07:11:19,609 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~j~0 0)) (.cse0 (< 0 (+ (div ~SIZE~0 4294967296) 1))) (.cse2 (<= ULTIMATE.start_main_~i~0 1)) (.cse3 (<= 1 ULTIMATE.start_main_~i~0)) (.cse4 (<= ~SIZE~0 20000001))) (or (and .cse0 (= ULTIMATE.start_main_~l~0 1) .cse1 .cse2 .cse3 .cse4) (let ((.cse5 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~j~0))) (and (<= (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) ULTIMATE.start_main_~l~0 3) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~j~0)) .cse0 (<= ULTIMATE.start_main_~l~0 .cse5) (<= .cse5 ULTIMATE.start_main_~l~0) .cse4)) (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1 (= ULTIMATE.start_main_~l~0 0) .cse4) (and .cse0 (= ULTIMATE.start_main_~l~0 2) .cse2 .cse3 (= ULTIMATE.start_main_~j~0 1) .cse4))) [2020-12-23 07:11:19,609 INFO L189 CegarLoopUtils]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2020-12-23 07:11:19,609 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-23 07:11:19,609 INFO L189 CegarLoopUtils]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-12-23 07:11:19,609 INFO L192 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2020-12-23 07:11:19,609 INFO L192 CegarLoopUtils]: At program point L32(lines 16 33) the Hoare annotation is: true [2020-12-23 07:11:19,610 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:11:19,610 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:11:19,610 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:11:19,610 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-12-23 07:11:19,610 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-23 07:11:19,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:11:19 BoogieIcfgContainer [2020-12-23 07:11:19,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:11:19,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:11:19,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:11:19,633 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:11:19,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:11:14" (3/4) ... [2020-12-23 07:11:19,637 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:11:19,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-23 07:11:19,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:11:19,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:11:19,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:11:19,696 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops-crafted-1/sumt2.c-witness.graphml [2020-12-23 07:11:19,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:11:19,698 INFO L168 Benchmark]: Toolchain (without parser) took 6329.25 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 134.3 MB in the beginning and 121.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,698 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:11:19,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.55 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 159.4 MB. Free memory was 124.4 MB in the beginning and 123.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,702 INFO L168 Benchmark]: Boogie Preprocessor took 23.29 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 122.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,702 INFO L168 Benchmark]: RCFGBuilder took 366.61 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 110.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,703 INFO L168 Benchmark]: TraceAbstraction took 5592.61 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 109.5 MB in the beginning and 123.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,704 INFO L168 Benchmark]: Witness Printer took 63.86 ms. Allocated memory is still 192.9 MB. Free memory was 123.8 MB in the beginning and 121.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:19,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 236.55 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 159.4 MB. Free memory was 124.4 MB in the beginning and 123.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.29 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 122.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.61 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 110.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5592.61 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 109.5 MB in the beginning and 123.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * Witness Printer took 63.86 ms. Allocated memory is still 192.9 MB. Free memory was 123.8 MB in the beginning and 121.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((0 < SIZE / 4294967296 + 1 && l == 1) && j == 0) && i <= 1) && 1 <= i) && SIZE <= 20000001) || ((((4294967296 * (n / 4294967296) + l + 3 <= n + i + j && 0 < SIZE / 4294967296 + 1) && l <= i + j) && i + j <= l) && SIZE <= 20000001)) || ((((0 < SIZE / 4294967296 + 1 && i == 0) && j == 0) && l == 0) && SIZE <= 20000001)) || (((((0 < SIZE / 4294967296 + 1 && l == 2) && i <= 1) && 1 <= i) && j == 1) && SIZE <= 20000001) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 47 SDslu, 65 SDs, 0 SdLazy, 350 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 103 HoareAnnotationTreeSize, 3 FomulaSimplifications, 85 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 12948 SizeOfPredicates, 14 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...