/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -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 23:10:14,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:14,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:14,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:14,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:14,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:14,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:14,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:14,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:14,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:14,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:14,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:14,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:14,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:14,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:14,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:14,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:14,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:14,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:14,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:14,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:14,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:14,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:14,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:14,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:10:14,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:14,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:14,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:14,521 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 23:10:14,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:14,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:14,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:14,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:14,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:14,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:14,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:14,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:14,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:14,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:14,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:14,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:14,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:14,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:14,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:14,544 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:14,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:14,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:14,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:14,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:14,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:14,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:14,546 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:10:15,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:15,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:15,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:15,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:15,104 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:15,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-09-04 23:10:15,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd/FLAGa3cfa8309 [2020-09-04 23:10:15,725 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:15,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c [2020-09-04 23:10:15,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd/FLAGa3cfa8309 [2020-09-04 23:10:16,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd [2020-09-04 23:10:16,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:16,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:16,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:16,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:16,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:16,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffbb17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16, skipping insertion in model container [2020-09-04 23:10:16,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:16,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:16,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:16,364 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:16,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:16,420 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:16,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16 WrapperNode [2020-09-04 23:10:16,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:16,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:16,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:16,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:16,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ... [2020-09-04 23:10:16,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:16,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:16,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:16,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:16,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (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 23:10:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:16,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:16,998 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:10:17,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:17 BoogieIcfgContainer [2020-09-04 23:10:17,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:17,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:17,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:17,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:17,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:16" (1/3) ... [2020-09-04 23:10:17,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:17, skipping insertion in model container [2020-09-04 23:10:17,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (2/3) ... [2020-09-04 23:10:17,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:17, skipping insertion in model container [2020-09-04 23:10:17,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:17" (3/3) ... [2020-09-04 23:10:17,016 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-09-04 23:10:17,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:17,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:17,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:17,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:17,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:17,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:17,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:17,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:17,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:17,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:17,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-04 23:10:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 23:10:17,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:17,148 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 23:10:17,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:17,157 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-04 23:10:17,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:17,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189946165] [2020-09-04 23:10:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:17,582 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 23:10:17,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189946165] [2020-09-04 23:10:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386682155] [2020-09-04 23:10:17,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:17,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:17,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:17,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:17,618 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-04 23:10:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:17,849 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-04 23:10:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:17,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-04 23:10:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:17,865 INFO L225 Difference]: With dead ends: 75 [2020-09-04 23:10:17,865 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 23:10:17,871 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 23:10:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 23:10:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-04 23:10:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 23:10:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-04 23:10:17,940 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-04 23:10:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:17,941 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-04 23:10:17,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-04 23:10:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 23:10:17,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:17,943 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 23:10:17,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:17,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:17,944 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-04 23:10:17,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:17,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587314082] [2020-09-04 23:10:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:18,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587314082] [2020-09-04 23:10:18,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:18,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:10:18,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802354245] [2020-09-04 23:10:18,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:10:18,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:18,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:10:18,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:10:18,498 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 11 states. [2020-09-04 23:10:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:18,945 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-04 23:10:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:10:18,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-09-04 23:10:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:18,948 INFO L225 Difference]: With dead ends: 49 [2020-09-04 23:10:18,948 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 23:10:18,950 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 23:10:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 23:10:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-09-04 23:10:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 23:10:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-04 23:10:18,973 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32 [2020-09-04 23:10:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:18,973 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-04 23:10:18,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:10:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-04 23:10:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:10:18,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:18,976 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 23:10:18,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:18,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-04 23:10:18,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:18,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811512100] [2020-09-04 23:10:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:19,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:19,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:19,120 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:10:19,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:19,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:19,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:19 BoogieIcfgContainer [2020-09-04 23:10:19,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:19,168 INFO L168 Benchmark]: Toolchain (without parser) took 3092.09 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 102.4 MB in the beginning and 145.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,170 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,172 INFO L168 Benchmark]: Boogie Preprocessor took 158.10 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,173 INFO L168 Benchmark]: RCFGBuilder took 423.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 164.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,174 INFO L168 Benchmark]: TraceAbstraction took 2158.65 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 145.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:19,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.10 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 164.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2158.65 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 145.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 51.9 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; VAL [SIZE=1] [L14] unsigned int j,k; VAL [SIZE=1] [L15] int array[SIZE], menor; VAL [array={2:0}, SIZE=1] [L17] menor = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, array={2:0}, menor=0, SIZE=1] [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, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.6s 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 10885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...