/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:57,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:57,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:57,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:57,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:57,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:57,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:57,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:57,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:57,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:57,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:57,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:57,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:57,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:57,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:57,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:57,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:57,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:57,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:57,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:57,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:57,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:57,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:57,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:57,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:57,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:57,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:57,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:57,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:57,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:57,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:57,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:57,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:57,840 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:57,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:57,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:57,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:57,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:57,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:57,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:57,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:57,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:57,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:57,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:57,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:57,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:57,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:57,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:57,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:57,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:57,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:57,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:57,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:57,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:57,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:57,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:57,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:57,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:57,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:58,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:58,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:58,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:58,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:58,384 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:58,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-09-04 13:42:58,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c26ffb24/443a837f665e4f369b35efb295a3e679/FLAG38138acd0 [2020-09-04 13:42:59,003 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:59,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c [2020-09-04 13:42:59,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c26ffb24/443a837f665e4f369b35efb295a3e679/FLAG38138acd0 [2020-09-04 13:42:59,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c26ffb24/443a837f665e4f369b35efb295a3e679 [2020-09-04 13:42:59,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:59,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:59,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:59,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:59,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:59,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc106bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59, skipping insertion in model container [2020-09-04 13:42:59,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:59,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:59,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:59,689 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:59,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:59,735 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:59,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59 WrapperNode [2020-09-04 13:42:59,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:59,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:59,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:59,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:59,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... [2020-09-04 13:42:59,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:59,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:59,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:59,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:59,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:59,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:00,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:00,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:43:00,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:00 BoogieIcfgContainer [2020-09-04 13:43:00,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:00,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:00,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:00,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:59" (1/3) ... [2020-09-04 13:43:00,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c043bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:00, skipping insertion in model container [2020-09-04 13:43:00,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:59" (2/3) ... [2020-09-04 13:43:00,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c043bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:00, skipping insertion in model container [2020-09-04 13:43:00,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:00" (3/3) ... [2020-09-04 13:43:00,222 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-09-04 13:43:00,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:00,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:00,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:00,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:00,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:00,307 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:00,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:00,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:00,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:00,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:00,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-04 13:43:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:43:00,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:00,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:00,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:00,354 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-09-04 13:43:00,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:00,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938056591] [2020-09-04 13:43:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:00,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938056591] [2020-09-04 13:43:00,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:00,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:43:00,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611727817] [2020-09-04 13:43:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:43:00,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:00,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:43:00,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:43:00,615 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-09-04 13:43:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:00,708 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-09-04 13:43:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:43:00,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-04 13:43:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:00,722 INFO L225 Difference]: With dead ends: 35 [2020-09-04 13:43:00,722 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 13:43:00,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:43:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 13:43:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-04 13:43:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-04 13:43:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-09-04 13:43:00,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-09-04 13:43:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:00,775 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-09-04 13:43:00,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:43:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-09-04 13:43:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:43:00,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:00,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:00,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:00,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-09-04 13:43:00,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:00,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678177453] [2020-09-04 13:43:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:00,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678177453] [2020-09-04 13:43:00,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:00,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:43:00,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656602396] [2020-09-04 13:43:00,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:43:00,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:00,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:43:00,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:43:00,955 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-09-04 13:43:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:01,010 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-09-04 13:43:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:43:01,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-04 13:43:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:01,012 INFO L225 Difference]: With dead ends: 24 [2020-09-04 13:43:01,012 INFO L226 Difference]: Without dead ends: 18 [2020-09-04 13:43:01,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:43:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-04 13:43:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-09-04 13:43:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-04 13:43:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-09-04 13:43:01,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-09-04 13:43:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:01,021 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-09-04 13:43:01,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:43:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-09-04 13:43:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:43:01,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:01,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:01,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:01,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-09-04 13:43:01,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:01,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303899601] [2020-09-04 13:43:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:01,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:01,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:01,146 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:43:01,146 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:43:01,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:43:01,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:01 BoogieIcfgContainer [2020-09-04 13:43:01,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:01,191 INFO L168 Benchmark]: Toolchain (without parser) took 1812.45 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 120.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,192 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.06 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,194 INFO L168 Benchmark]: Boogie Preprocessor took 128.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 179.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,195 INFO L168 Benchmark]: RCFGBuilder took 346.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,196 INFO L168 Benchmark]: TraceAbstraction took 973.95 ms. Allocated memory is still 201.9 MB. Free memory was 164.8 MB in the beginning and 120.8 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:01,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.06 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 179.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 973.95 ms. Allocated memory is still 201.9 MB. Free memory was 164.8 MB in the beginning and 120.8 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 VAL [array={2:0}, j=0, menor=0, SIZE=1] [L19] COND TRUE jmenor) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 11 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...