/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-dev-4f750a8 [2020-12-22 04:50:31,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:50:31,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:50:31,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:50:31,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:50:31,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:50:31,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:50:31,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:50:31,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:50:31,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:50:31,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:50:31,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:50:31,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:50:31,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:50:31,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:50:31,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:50:31,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:50:31,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:50:31,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:50:31,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:50:31,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:50:31,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:50:31,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:50:31,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:50:31,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:50:31,678 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:50:31,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:50:31,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:50:31,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:50:31,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:50:31,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:50:31,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:50:31,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:50:31,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:50:31,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:50:31,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:50:31,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:50:31,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:50:31,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:50:31,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:50:31,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:50:31,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:50:31,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:50:31,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:50:31,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:50:31,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:50:31,683 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:50:32,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:50:32,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:50:32,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:50:32,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:50:32,148 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:50:32,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-12-22 04:50:32,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87cf044cd/90657d4c3fa8470e84d83dd72474b2f3/FLAG71b812fec [2020-12-22 04:50:32,914 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:50:32,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-12-22 04:50:32,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87cf044cd/90657d4c3fa8470e84d83dd72474b2f3/FLAG71b812fec [2020-12-22 04:50:33,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87cf044cd/90657d4c3fa8470e84d83dd72474b2f3 [2020-12-22 04:50:33,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:50:33,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:50:33,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:33,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:50:33,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:50:33,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d7f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33, skipping insertion in model container [2020-12-22 04:50:33,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:50:33,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:50:33,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2020-12-22 04:50:33,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:33,496 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:50:33,510 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2020-12-22 04:50:33,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:33,534 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:50:33,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33 WrapperNode [2020-12-22 04:50:33,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:33,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:33,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:50:33,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:50:33,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:33,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:50:33,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:50:33,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:50:33,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... [2020-12-22 04:50:33,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:50:33,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:50:33,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:50:33,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:50:33,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:50:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:50:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:50:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:50:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:50:33,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:50:33,911 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:50:33,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:33 BoogieIcfgContainer [2020-12-22 04:50:33,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:50:33,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:50:33,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:50:33,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:50:33,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:50:33" (1/3) ... [2020-12-22 04:50:33,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c235f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:33, skipping insertion in model container [2020-12-22 04:50:33,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:33" (2/3) ... [2020-12-22 04:50:33,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c235f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:33, skipping insertion in model container [2020-12-22 04:50:33,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:33" (3/3) ... [2020-12-22 04:50:33,926 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-12-22 04:50:33,933 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:50:33,938 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:50:33,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:50:33,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:50:33,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:50:33,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:50:33,998 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:50:33,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:50:33,998 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:50:33,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:50:33,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:50:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-22 04:50:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:34,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:34,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:34,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:34,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274183, now seen corresponding path program 1 times [2020-12-22 04:50:34,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:34,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207119924] [2020-12-22 04:50:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:34,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207119924] [2020-12-22 04:50:34,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:34,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:50:34,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257074352] [2020-12-22 04:50:34,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:50:34,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:34,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:50:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:50:34,368 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-22 04:50:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:34,385 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-22 04:50:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:50:34,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:50:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:34,403 INFO L225 Difference]: With dead ends: 21 [2020-12-22 04:50:34,406 INFO L226 Difference]: Without dead ends: 9 [2020-12-22 04:50:34,412 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 [2020-12-22 04:50:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-22 04:50:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-22 04:50:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-22 04:50:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-22 04:50:34,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-12-22 04:50:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:34,452 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-22 04:50:34,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:50:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-22 04:50:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:34,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:34,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:34,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:50:34,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976273, now seen corresponding path program 1 times [2020-12-22 04:50:34,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:34,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002722642] [2020-12-22 04:50:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:34,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002722642] [2020-12-22 04:50:34,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:34,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:50:34,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188015246] [2020-12-22 04:50:34,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:50:34,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:50:34,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:50:34,591 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-22 04:50:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:34,615 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-22 04:50:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:50:34,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 04:50:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:34,616 INFO L225 Difference]: With dead ends: 14 [2020-12-22 04:50:34,616 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 04:50:34,617 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 [2020-12-22 04:50:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 04:50:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 04:50:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 04:50:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-22 04:50:34,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2020-12-22 04:50:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:34,621 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-22 04:50:34,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:50:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-22 04:50:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:50:34,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:34,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:34,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:50:34,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:34,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754644, now seen corresponding path program 1 times [2020-12-22 04:50:34,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:34,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45804642] [2020-12-22 04:50:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:34,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45804642] [2020-12-22 04:50:34,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916904516] [2020-12-22 04:50:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:50:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:34,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 04:50:34,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:34,897 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:50:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:34,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:34,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-22 04:50:34,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854887537] [2020-12-22 04:50:34,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:50:34,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:50:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:50:34,917 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2020-12-22 04:50:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:35,029 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-12-22 04:50:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:50:35,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-22 04:50:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:35,031 INFO L225 Difference]: With dead ends: 19 [2020-12-22 04:50:35,031 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 04:50:35,032 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 [2020-12-22 04:50:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 04:50:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-22 04:50:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 04:50:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-22 04:50:35,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2020-12-22 04:50:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:35,036 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-22 04:50:35,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:50:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-22 04:50:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:50:35,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:35,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:35,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:50:35,251 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2052272297, now seen corresponding path program 2 times [2020-12-22 04:50:35,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:35,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848381118] [2020-12-22 04:50:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:35,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848381118] [2020-12-22 04:50:35,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11260657] [2020-12-22 04:50:35,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:50:35,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:50:35,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:50:35,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 04:50:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:35,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:50:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:35,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:35,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-22 04:50:35,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412901299] [2020-12-22 04:50:35,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:50:35,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:50:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:50:35,506 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 11 states. [2020-12-22 04:50:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:35,633 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-12-22 04:50:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:50:35,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-12-22 04:50:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:35,634 INFO L225 Difference]: With dead ends: 15 [2020-12-22 04:50:35,635 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:50:35,635 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 [2020-12-22 04:50:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:50:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:50:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:50:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:50:35,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-22 04:50:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:35,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:50:35,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:50:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:50:35,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:50:35,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:50:35,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:50:35,901 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:50:35,901 INFO L192 CegarLoopUtils]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-12-22 04:50:35,901 INFO L189 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-22 04:50:35,901 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-22 04:50:35,902 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:50:35,902 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:50:35,902 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:50:35,902 INFO L189 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-22 04:50:35,902 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)))) [2020-12-22 04:50:35,903 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-22 04:50:35,903 INFO L189 CegarLoopUtils]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-12-22 04:50:35,903 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-22 04:50:35,903 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-22 04:50:35,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:50:35 BoogieIcfgContainer [2020-12-22 04:50:35,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:50:35,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:50:35,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:50:35,922 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:50:35,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:33" (3/4) ... [2020-12-22 04:50:35,926 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:50:35,937 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 04:50:35,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:50:35,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:35,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:35,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark05_conjunctive.i-witness.graphml [2020-12-22 04:50:35,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:50:35,985 INFO L168 Benchmark]: Toolchain (without parser) took 2713.24 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 137.1 MB in the beginning and 165.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,986 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:50:35,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.50 ms. Allocated memory is still 161.5 MB. Free memory was 136.8 MB in the beginning and 127.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 161.5 MB. Free memory was 127.4 MB in the beginning and 126.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,988 INFO L168 Benchmark]: Boogie Preprocessor took 22.44 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 125.1 MB in the end (delta: 957.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,989 INFO L168 Benchmark]: RCFGBuilder took 318.91 ms. Allocated memory is still 161.5 MB. Free memory was 124.9 MB in the beginning and 112.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,990 INFO L168 Benchmark]: TraceAbstraction took 2006.26 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 112.5 MB in the beginning and 167.8 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:50:35,991 INFO L168 Benchmark]: Witness Printer took 61.54 ms. Allocated memory is still 194.0 MB. Free memory was 167.8 MB in the beginning and 165.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:35,995 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 161.5 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.50 ms. Allocated memory is still 161.5 MB. Free memory was 136.8 MB in the beginning and 127.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 161.5 MB. Free memory was 127.4 MB in the beginning and 126.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.44 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 125.1 MB in the end (delta: 957.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 318.91 ms. Allocated memory is still 161.5 MB. Free memory was 124.9 MB in the beginning and 112.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2006.26 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 112.5 MB in the beginning and 167.8 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 61.54 ms. Allocated memory is still 194.0 MB. Free memory was 167.8 MB in the beginning and 165.2 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: 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: 1.8s, 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, 0.5s 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...