/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/loop-zilu/benchmark05_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:15:42,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:15:42,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:15:42,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 07:15:42,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:15:42,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:15:42,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:15:42,555 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 07:15:42,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:15:42,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:15:42,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:15:42,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:15:42,620 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:15:42,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:15:42,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:15:42,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:15:42,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:15:42,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:15:42,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:15:42,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:15:42,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:15:42,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:15:42,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:15:42,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:15:42,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:15:42,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:15:42,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:15:42,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:15:42,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:15:42,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:15:42,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:15:42,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:15:42,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:15:42,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:15:43,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:15:43,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:15:43,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:15:43,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:15:43,180 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:15:43,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-12-23 07:15:43,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6144d02fb/288a099026894bdeb41eed94da00f487/FLAG4b6bb2353 [2020-12-23 07:15:44,056 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:15:44,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-12-23 07:15:44,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6144d02fb/288a099026894bdeb41eed94da00f487/FLAG4b6bb2353 [2020-12-23 07:15:44,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6144d02fb/288a099026894bdeb41eed94da00f487 [2020-12-23 07:15:44,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:15:44,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:15:44,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:15:44,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:15:44,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:15:44,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca899bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44, skipping insertion in model container [2020-12-23 07:15:44,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:15:44,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:15:44,688 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2020-12-23 07:15:44,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:15:44,724 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:15:44,742 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2020-12-23 07:15:44,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:15:44,771 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:15:44,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44 WrapperNode [2020-12-23 07:15:44,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:15:44,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:15:44,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:15:44,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:15:44,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:15:44,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:15:44,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:15:44,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:15:44,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (1/1) ... [2020-12-23 07:15:44,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:15:44,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:15:44,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:15:44,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:15:44,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (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 07:15:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:15:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:15:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:15:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:15:45,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:15:45,209 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 07:15:45,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:15:45 BoogieIcfgContainer [2020-12-23 07:15:45,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:15:45,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:15:45,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:15:45,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:15:45,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:15:44" (1/3) ... [2020-12-23 07:15:45,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2bea10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:15:45, skipping insertion in model container [2020-12-23 07:15:45,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:15:44" (2/3) ... [2020-12-23 07:15:45,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2bea10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:15:45, skipping insertion in model container [2020-12-23 07:15:45,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:15:45" (3/3) ... [2020-12-23 07:15:45,222 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-12-23 07:15:45,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:15:45,235 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 07:15:45,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 07:15:45,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:15:45,287 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:15:45,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:15:45,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:15:45,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:15:45,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:15:45,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:15:45,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:15:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-23 07:15:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:15:45,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:15:45,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:15:45,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:15:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:15:45,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274183, now seen corresponding path program 1 times [2020-12-23 07:15:45,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:15:45,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31006512] [2020-12-23 07:15:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:15:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:15:45,548 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 07:15:45,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31006512] [2020-12-23 07:15:45,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:15:45,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:15:45,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894220276] [2020-12-23 07:15:45,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:15:45,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:15:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:15:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:15:45,582 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-23 07:15:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:15:45,601 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-23 07:15:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:15:45,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:15:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:15:45,616 INFO L225 Difference]: With dead ends: 21 [2020-12-23 07:15:45,616 INFO L226 Difference]: Without dead ends: 9 [2020-12-23 07:15:45,621 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 07:15:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-23 07:15:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-23 07:15:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-23 07:15:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-23 07:15:45,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-12-23 07:15:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:15:45,664 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-23 07:15:45,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:15:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-23 07:15:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:15:45,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:15:45,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:15:45,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:15:45,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:15:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:15:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976273, now seen corresponding path program 1 times [2020-12-23 07:15:45,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:15:45,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969136541] [2020-12-23 07:15:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:15:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:15:45,826 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 07:15:45,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969136541] [2020-12-23 07:15:45,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:15:45,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:15:45,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027047842] [2020-12-23 07:15:45,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 07:15:45,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:15:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 07:15:45,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:15:45,830 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-23 07:15:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:15:45,850 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-23 07:15:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 07:15:45,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 07:15:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:15:45,851 INFO L225 Difference]: With dead ends: 14 [2020-12-23 07:15:45,852 INFO L226 Difference]: Without dead ends: 10 [2020-12-23 07:15:45,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 07:15:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-23 07:15:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-23 07:15:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-23 07:15:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-23 07:15:45,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-12-23 07:15:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:15:45,857 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-23 07:15:45,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 07:15:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-23 07:15:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:15:45,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:15:45,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:15:45,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:15:45,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:15:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:15:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754644, now seen corresponding path program 1 times [2020-12-23 07:15:45,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:15:45,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329659581] [2020-12-23 07:15:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:15:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:15:46,042 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 07:15:46,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329659581] [2020-12-23 07:15:46,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013522700] [2020-12-23 07:15:46,043 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 07:15:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:15:46,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 07:15:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:15:46,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:15:46,390 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 07:15:46,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:15:46,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-23 07:15:46,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301602169] [2020-12-23 07:15:46,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:15:46,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:15:46,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:15:46,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:15:46,398 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2020-12-23 07:15:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:15:46,493 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-12-23 07:15:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:15:46,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-23 07:15:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:15:46,495 INFO L225 Difference]: With dead ends: 19 [2020-12-23 07:15:46,495 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 07:15:46,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:15:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 07:15:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-23 07:15:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 07:15:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-23 07:15:46,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2020-12-23 07:15:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:15:46,500 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-23 07:15:46,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:15:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-23 07:15:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:15:46,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:15:46,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:15:46,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:15:46,717 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:15:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:15:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2052272297, now seen corresponding path program 2 times [2020-12-23 07:15:46,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:15:46,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976678360] [2020-12-23 07:15:46,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:15:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:15:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:15:46,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976678360] [2020-12-23 07:15:46,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509417775] [2020-12-23 07:15:46,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:15:46,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:15:46,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:15:46,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:15:46,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:15:47,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:15:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:15:47,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:15:47,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-23 07:15:47,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903610201] [2020-12-23 07:15:47,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:15:47,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:15:47,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:15:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:15:47,031 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 11 states. [2020-12-23 07:15:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:15:47,165 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-12-23 07:15:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:15:47,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-12-23 07:15:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:15:47,166 INFO L225 Difference]: With dead ends: 15 [2020-12-23 07:15:47,166 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:15:47,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:15:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:15:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:15:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:15:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:15:47,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-23 07:15:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:15:47,169 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:15:47,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:15:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:15:47,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:15:47,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:15:47,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:15:47,412 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:15:47,413 INFO L192 CegarLoopUtils]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-12-23 07:15:47,413 INFO L189 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-23 07:15:47,413 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-23 07:15:47,413 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:15:47,414 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:15:47,414 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:15:47,415 INFO L189 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-23 07:15:47,415 INFO L185 CegarLoopUtils]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) .cse0 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) (and .cse0 (<= (+ ULTIMATE.start_main_~y~0 1) ULTIMATE.start_main_~n~0)))) [2020-12-23 07:15:47,415 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-23 07:15:47,416 INFO L189 CegarLoopUtils]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-12-23 07:15:47,416 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-23 07:15:47,416 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-23 07:15:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:15:47 BoogieIcfgContainer [2020-12-23 07:15:47,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:15:47,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:15:47,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:15:47,437 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:15:47,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:15:45" (3/4) ... [2020-12-23 07:15:47,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:15:47,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 07:15:47,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:15:47,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:15:47,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:15:47,502 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark05_conjunctive.i-witness.graphml [2020-12-23 07:15:47,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:15:47,505 INFO L168 Benchmark]: Toolchain (without parser) took 3096.66 ms. Allocated memory was 166.7 MB in the beginning and 211.8 MB in the end (delta: 45.1 MB). Free memory was 141.9 MB in the beginning and 184.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,505 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 166.7 MB. Free memory is still 138.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:15:47,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 166.7 MB. Free memory was 141.5 MB in the beginning and 132.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.73 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 130.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,508 INFO L168 Benchmark]: Boogie Preprocessor took 50.83 ms. Allocated memory is still 166.7 MB. Free memory was 130.8 MB in the beginning and 129.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,509 INFO L168 Benchmark]: RCFGBuilder took 337.57 ms. Allocated memory is still 166.7 MB. Free memory was 129.8 MB in the beginning and 118.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,509 INFO L168 Benchmark]: TraceAbstraction took 2222.27 ms. Allocated memory was 166.7 MB in the beginning and 211.8 MB in the end (delta: 45.1 MB). Free memory was 117.6 MB in the beginning and 187.0 MB in the end (delta: -69.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:15:47,510 INFO L168 Benchmark]: Witness Printer took 65.94 ms. Allocated memory is still 211.8 MB. Free memory was 187.0 MB in the beginning and 184.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:15:47,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 166.7 MB. Free memory is still 138.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 166.7 MB. Free memory was 141.5 MB in the beginning and 132.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.73 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 130.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.83 ms. Allocated memory is still 166.7 MB. Free memory was 130.8 MB in the beginning and 129.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 337.57 ms. Allocated memory is still 166.7 MB. Free memory was 129.8 MB in the beginning and 118.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2222.27 ms. Allocated memory was 166.7 MB in the beginning and 211.8 MB in the end (delta: 45.1 MB). Free memory was 117.6 MB in the beginning and 187.0 MB in the end (delta: -69.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 65.94 ms. Allocated memory is still 211.8 MB. Free memory was 187.0 MB in the beginning and 184.4 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: 16]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((y <= n && x <= y) && y <= x) || (x <= y && y + 1 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 15 SDslu, 29 SDs, 0 SdLazy, 76 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1854 SizeOfPredicates, 9 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 5/10 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...