/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:32,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:32,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:32,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:32,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:32,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:32,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:32,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:32,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:32,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:32,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:32,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:32,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:32,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:32,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:32,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:32,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:32,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:32,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:32,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:32,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:32,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:32,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:32,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:32,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:32,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:32,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:32,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:32,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:44:32,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:32,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:32,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:32,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:32,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:32,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:32,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:32,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:32,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:32,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:32,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:32,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:32,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:32,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:32,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:32,564 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:32,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:32,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:32,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:32,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:32,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:32,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:32,565 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:33,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:33,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:33,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:33,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:33,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:33,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-09-04 17:44:33,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926a55323/5f645a37c94145cabfd2afdd834fcde1/FLAG9f3717170 [2020-09-04 17:44:33,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:33,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c [2020-09-04 17:44:33,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926a55323/5f645a37c94145cabfd2afdd834fcde1/FLAG9f3717170 [2020-09-04 17:44:34,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/926a55323/5f645a37c94145cabfd2afdd834fcde1 [2020-09-04 17:44:34,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:34,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:34,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:34,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:34,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:34,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e0ef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34, skipping insertion in model container [2020-09-04 17:44:34,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:34,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:34,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:34,447 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:34,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:34,498 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:34,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34 WrapperNode [2020-09-04 17:44:34,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:34,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:34,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:34,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:34,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (1/1) ... [2020-09-04 17:44:34,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:34,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:34,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:34,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:34,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (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 17:44:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:35,058 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:35,058 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:44:35,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:35 BoogieIcfgContainer [2020-09-04 17:44:35,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:35,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:35,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:35,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:35,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:34" (1/3) ... [2020-09-04 17:44:35,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b1bedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:35, skipping insertion in model container [2020-09-04 17:44:35,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:34" (2/3) ... [2020-09-04 17:44:35,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b1bedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:35, skipping insertion in model container [2020-09-04 17:44:35,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:35" (3/3) ... [2020-09-04 17:44:35,073 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-09-04 17:44:35,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:35,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:35,123 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:35,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:35,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:35,150 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:35,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:35,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:35,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:35,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:35,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-04 17:44:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 17:44:35,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:35,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:35,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:35,188 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-04 17:44:35,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:35,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11190913] [2020-09-04 17:44:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:35,283 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:35,623 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 17:44:35,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11190913] [2020-09-04 17:44:35,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:35,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:35,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64054681] [2020-09-04 17:44:35,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:35,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:35,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:35,657 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-04 17:44:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:35,866 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-04 17:44:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:35,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-04 17:44:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:35,880 INFO L225 Difference]: With dead ends: 75 [2020-09-04 17:44:35,880 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 17:44:35,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:44:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 17:44:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-04 17:44:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 17:44:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-04 17:44:35,945 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-04 17:44:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:35,945 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-04 17:44:35,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-04 17:44:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 17:44:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:35,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:35,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:35,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-04 17:44:35,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:35,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818230739] [2020-09-04 17:44:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:35,985 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:36,523 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 17:44:36,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818230739] [2020-09-04 17:44:36,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:44:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143960150] [2020-09-04 17:44:36,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:44:36,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:36,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:44:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:44:36,529 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 11 states. [2020-09-04 17:44:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:36,932 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-04 17:44:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 17:44:36,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-09-04 17:44:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:36,934 INFO L225 Difference]: With dead ends: 49 [2020-09-04 17:44:36,934 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 17:44:36,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:44:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 17:44:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-09-04 17:44:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 17:44:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-04 17:44:36,951 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32 [2020-09-04 17:44:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:36,951 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-04 17:44:36,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:44:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-04 17:44:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 17:44:36,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:36,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:36,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:36,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:36,954 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-04 17:44:36,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:36,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443087527] [2020-09-04 17:44:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:36,963 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:36,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:37,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:37,049 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:37,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:37,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:37,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:37 BoogieIcfgContainer [2020-09-04 17:44:37,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:37,074 INFO L168 Benchmark]: Toolchain (without parser) took 2950.48 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.6 MB in the beginning and 143.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:37,075 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:37,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.02 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:37,077 INFO L168 Benchmark]: Boogie Preprocessor took 156.81 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 92.4 MB in the beginning and 181.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:37,078 INFO L168 Benchmark]: RCFGBuilder took 406.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:37,080 INFO L168 Benchmark]: TraceAbstraction took 2006.60 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 143.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:37,084 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.02 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.81 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 92.4 MB in the beginning and 181.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 165.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2006.60 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 143.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 53.3 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 [L19] COND TRUE jmenor) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 134 SDslu, 155 SDs, 0 SdLazy, 208 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...