/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-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:30:56,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:30:56,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:30:56,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:30:56,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:30:56,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:30:56,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:30:56,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:30:56,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:30:56,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:30:56,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:30:56,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:30:56,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:30:56,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:30:56,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:30:56,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:30:56,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:30:56,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:30:56,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:30:56,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:30:56,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:30:56,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:30:56,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:30:56,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:30:56,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:30:56,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:30:56,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:30:56,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:30:56,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:30:56,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:30:56,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:30:56,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:30:56,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:30:56,671 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:30:56,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:30:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:30:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:30:56,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:30:56,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:30:56,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:30:56,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:30:56,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:30:56,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:30:56,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:30:56,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:30:56,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:30:56,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:30:56,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:30:56,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:30:56,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:30:56,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:30:56,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:30:56,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:30:56,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:30:56,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:30:57,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:30:57,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:30:57,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:30:57,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:30:57,188 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:30:57,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/large_const.i [2020-12-22 04:30:57,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442a28a8c/e2e0eba1052043a59dd110cb4d8ee0fd/FLAGf87186da3 [2020-12-22 04:30:57,961 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:30:57,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i [2020-12-22 04:30:57,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442a28a8c/e2e0eba1052043a59dd110cb4d8ee0fd/FLAGf87186da3 [2020-12-22 04:30:58,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/442a28a8c/e2e0eba1052043a59dd110cb4d8ee0fd [2020-12-22 04:30:58,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:30:58,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:30:58,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:30:58,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:30:58,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:30:58,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741603c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58, skipping insertion in model container [2020-12-22 04:30:58,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:30:58,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:30:58,585 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-invgen/large_const.i[893,906] [2020-12-22 04:30:58,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:30:58,611 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:30:58,627 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-invgen/large_const.i[893,906] [2020-12-22 04:30:58,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:30:58,650 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:30:58,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58 WrapperNode [2020-12-22 04:30:58,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:30:58,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:30:58,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:30:58,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:30:58,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:30:58,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:30:58,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:30:58,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:30:58,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (1/1) ... [2020-12-22 04:30:58,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:30:58,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:30:58,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:30:58,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:30:58,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (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 04:30:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:30:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:30:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:30:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:30:59,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:30:59,236 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 04:30:59,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:59 BoogieIcfgContainer [2020-12-22 04:30:59,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:30:59,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:30:59,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:30:59,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:30:59,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:30:58" (1/3) ... [2020-12-22 04:30:59,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492e079b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:59, skipping insertion in model container [2020-12-22 04:30:59,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:58" (2/3) ... [2020-12-22 04:30:59,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492e079b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:59, skipping insertion in model container [2020-12-22 04:30:59,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:59" (3/3) ... [2020-12-22 04:30:59,262 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-12-22 04:30:59,279 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:30:59,285 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:30:59,310 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:30:59,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:30:59,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:30:59,339 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:30:59,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:30:59,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:30:59,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:30:59,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:30:59,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:30:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 04:30:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:30:59,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:59,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:30:59,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:59,379 INFO L82 PathProgramCache]: Analyzing trace with hash 200473929, now seen corresponding path program 1 times [2020-12-22 04:30:59,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:59,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834910915] [2020-12-22 04:30:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:30:59,552 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 04:30:59,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834910915] [2020-12-22 04:30:59,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:30:59,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:30:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407249865] [2020-12-22 04:30:59,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:30:59,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:30:59,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:30:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:30:59,581 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-22 04:30:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:30:59,599 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-22 04:30:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:30:59,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 04:30:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:30:59,612 INFO L225 Difference]: With dead ends: 27 [2020-12-22 04:30:59,613 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 04:30:59,616 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 04:30:59,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 04:30:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 04:30:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 04:30:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-12-22 04:30:59,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2020-12-22 04:30:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:30:59,657 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-22 04:30:59,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:30:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-12-22 04:30:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:30:59,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:59,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:30:59,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:30:59,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash 182003509, now seen corresponding path program 1 times [2020-12-22 04:30:59,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:59,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948603747] [2020-12-22 04:30:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:30:59,772 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 04:30:59,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948603747] [2020-12-22 04:30:59,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:30:59,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:30:59,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508258214] [2020-12-22 04:30:59,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:30:59,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:30:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:30:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:30:59,780 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 5 states. [2020-12-22 04:30:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:30:59,894 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-22 04:30:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:30:59,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 04:30:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:30:59,897 INFO L225 Difference]: With dead ends: 21 [2020-12-22 04:30:59,897 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 04:30:59,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:30:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 04:30:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-22 04:30:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 04:30:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-22 04:30:59,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2020-12-22 04:30:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:30:59,909 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-22 04:30:59,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:30:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-22 04:30:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:30:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:59,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:30:59,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:30:59,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:59,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash -52175062, now seen corresponding path program 1 times [2020-12-22 04:30:59,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:59,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921940313] [2020-12-22 04:30:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:00,096 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 04:31:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921940313] [2020-12-22 04:31:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286764779] [2020-12-22 04:31:00,098 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 04:31:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:00,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:31:00,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:31:00,350 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 04:31:00,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:31:00,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 04:31:00,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105015900] [2020-12-22 04:31:00,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:31:00,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:31:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:31:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:31:00,354 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2020-12-22 04:31:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:31:00,597 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-12-22 04:31:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:31:00,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-22 04:31:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:31:00,599 INFO L225 Difference]: With dead ends: 33 [2020-12-22 04:31:00,599 INFO L226 Difference]: Without dead ends: 31 [2020-12-22 04:31:00,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:31:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-22 04:31:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2020-12-22 04:31:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:31:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-22 04:31:00,608 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2020-12-22 04:31:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:31:00,608 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-22 04:31:00,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:31:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-22 04:31:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:31:00,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:31:00,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:31:00,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:31:00,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:31:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:31:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash 566429229, now seen corresponding path program 1 times [2020-12-22 04:31:00,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:31:00,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849014456] [2020-12-22 04:31:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:31:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:00,950 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 04:31:00,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849014456] [2020-12-22 04:31:00,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629493663] [2020-12-22 04:31:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 04:31:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:31:01,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:31:01,103 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 04:31:01,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:31:01,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 04:31:01,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048741115] [2020-12-22 04:31:01,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:31:01,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:31:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:31:01,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:31:01,106 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 8 states. [2020-12-22 04:31:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:31:01,326 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-12-22 04:31:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:31:01,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 04:31:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:31:01,328 INFO L225 Difference]: With dead ends: 39 [2020-12-22 04:31:01,328 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 04:31:01,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:31:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 04:31:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2020-12-22 04:31:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 04:31:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2020-12-22 04:31:01,336 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 12 [2020-12-22 04:31:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:31:01,336 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2020-12-22 04:31:01,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:31:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-12-22 04:31:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:31:01,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:31:01,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:31:01,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:01,552 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:31:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:31:01,553 INFO L82 PathProgramCache]: Analyzing trace with hash 623687531, now seen corresponding path program 1 times [2020-12-22 04:31:01,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:31:01,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138873886] [2020-12-22 04:31:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:31:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:01,634 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 04:31:01,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138873886] [2020-12-22 04:31:01,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342227882] [2020-12-22 04:31:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:01,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:31:01,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:31:01,791 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 04:31:01,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:31:01,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 04:31:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925655062] [2020-12-22 04:31:01,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:31:01,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:31:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:31:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:31:01,793 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 8 states. [2020-12-22 04:31:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:31:01,988 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2020-12-22 04:31:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:31:01,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-22 04:31:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:31:01,990 INFO L225 Difference]: With dead ends: 43 [2020-12-22 04:31:01,990 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 04:31:01,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:31:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 04:31:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2020-12-22 04:31:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 04:31:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-12-22 04:31:01,998 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 12 [2020-12-22 04:31:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:31:01,999 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-12-22 04:31:01,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:31:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-12-22 04:31:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:31:01,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:31:02,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:31:02,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:02,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:31:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:31:02,214 INFO L82 PathProgramCache]: Analyzing trace with hash 435730244, now seen corresponding path program 1 times [2020-12-22 04:31:02,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:31:02,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685486850] [2020-12-22 04:31:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:31:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:31:02,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685486850] [2020-12-22 04:31:02,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15486551] [2020-12-22 04:31:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:02,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 04:31:02,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:31:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:31:02,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:31:02,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-22 04:31:02,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351503831] [2020-12-22 04:31:02,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:31:02,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:31:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:31:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:31:02,412 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 5 states. [2020-12-22 04:31:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:31:02,436 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2020-12-22 04:31:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:31:02,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 04:31:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:31:02,437 INFO L225 Difference]: With dead ends: 37 [2020-12-22 04:31:02,438 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 04:31:02,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:31:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 04:31:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 04:31:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 04:31:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-22 04:31:02,443 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-22 04:31:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:31:02,443 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-22 04:31:02,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:31:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-22 04:31:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:31:02,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:31:02,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:31:02,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:02,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:31:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:31:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash 521583522, now seen corresponding path program 1 times [2020-12-22 04:31:02,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:31:02,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235662304] [2020-12-22 04:31:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:31:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:31:02,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235662304] [2020-12-22 04:31:02,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158833731] [2020-12-22 04:31:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:31:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:31:02,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 04:31:02,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:31:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:31:02,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:31:02,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-12-22 04:31:02,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626766380] [2020-12-22 04:31:02,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:31:02,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:31:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:31:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:31:02,823 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2020-12-22 04:31:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:31:02,831 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2020-12-22 04:31:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:31:02,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 04:31:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:31:02,832 INFO L225 Difference]: With dead ends: 30 [2020-12-22 04:31:02,832 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:31:02,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:31:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:31:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:31:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:31:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:31:02,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-22 04:31:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:31:02,834 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:31:02,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:31:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:31:02,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:31:03,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 04:31:03,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:31:03,342 INFO L189 CegarLoopUtils]: For program point L31(line 31) no Hoare annotation was computed. [2020-12-22 04:31:03,343 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-22 04:31:03,343 INFO L189 CegarLoopUtils]: For program point L40(lines 40 43) no Hoare annotation was computed. [2020-12-22 04:31:03,343 INFO L185 CegarLoopUtils]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse1 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~k~0 0) .cse0 .cse1 .cse2) (and (< ULTIMATE.start_main_~n~0 2) .cse0 .cse1 .cse2 (<= 2000 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start_main_~i~0)))) [2020-12-22 04:31:03,343 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:31:03,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:31:03,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse2 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse3 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~j~0) .cse1 .cse2 .cse3) (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0) (<= ULTIMATE.start_main_~n~0 0)) (and (<= 0 ULTIMATE.start_main_~j~0) .cse0 .cse1 .cse2 .cse3 (<= 2000 ULTIMATE.start_main_~k~0)))) [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point L38(lines 38 43) no Hoare annotation was computed. [2020-12-22 04:31:03,344 INFO L189 CegarLoopUtils]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2020-12-22 04:31:03,345 INFO L192 CegarLoopUtils]: At program point L51(lines 24 52) the Hoare annotation is: true [2020-12-22 04:31:03,345 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-22 04:31:03,345 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~n~0 2) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 4000 ULTIMATE.start_main_~c1~0) (<= 2000 ULTIMATE.start_main_~c2~0) (<= 10000 ULTIMATE.start_main_~c3~0)) [2020-12-22 04:31:03,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:31:03 BoogieIcfgContainer [2020-12-22 04:31:03,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:31:03,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:31:03,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:31:03,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:31:03,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:59" (3/4) ... [2020-12-22 04:31:03,377 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:31:03,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 04:31:03,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:31:03,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 04:31:03,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:31:03,450 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/large_const.i-witness.graphml [2020-12-22 04:31:03,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:31:03,452 INFO L168 Benchmark]: Toolchain (without parser) took 5122.14 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.8 MB in the beginning and 176.1 MB in the end (delta: -33.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,453 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:31:03,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.88 ms. Allocated memory is still 162.5 MB. Free memory was 142.8 MB in the beginning and 133.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 162.5 MB. Free memory was 132.8 MB in the beginning and 131.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,455 INFO L168 Benchmark]: Boogie Preprocessor took 86.94 ms. Allocated memory is still 162.5 MB. Free memory was 131.0 MB in the beginning and 145.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,455 INFO L168 Benchmark]: RCFGBuilder took 460.08 ms. Allocated memory is still 162.5 MB. Free memory was 145.4 MB in the beginning and 131.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,456 INFO L168 Benchmark]: TraceAbstraction took 4124.95 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 131.4 MB in the beginning and 66.0 MB in the end (delta: 65.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,457 INFO L168 Benchmark]: Witness Printer took 80.00 ms. Allocated memory is still 195.0 MB. Free memory was 66.0 MB in the beginning and 176.1 MB in the end (delta: -110.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:31:03,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.88 ms. Allocated memory is still 162.5 MB. Free memory was 142.8 MB in the beginning and 133.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 162.5 MB. Free memory was 132.8 MB in the beginning and 131.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.94 ms. Allocated memory is still 162.5 MB. Free memory was 131.0 MB in the beginning and 145.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 460.08 ms. Allocated memory is still 162.5 MB. Free memory was 145.4 MB in the beginning and 131.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4124.95 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 131.4 MB in the beginning and 66.0 MB in the end (delta: 65.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. * Witness Printer took 80.00 ms. Allocated memory is still 195.0 MB. Free memory was 66.0 MB in the beginning and 176.1 MB in the end (delta: -110.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 17]: Loop Invariant Derived loop invariant: ((((0 <= j && n < 2) && !(0 == cond)) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((i == 0 && k == 0) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) || (((((n < 2 && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) && 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((n < 2 && 1 <= j) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) || ((i == 0 && j == 0) && n <= 0)) || (((((0 <= j && n < 2) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 124 SDslu, 183 SDs, 0 SdLazy, 203 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, 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, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 103 HoareAnnotationTreeSize, 4 FomulaSimplifications, 543 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4851 SizeOfPredicates, 12 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 12/22 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...