/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/array-fpi/s5liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:19,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:19,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:19,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:19,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:19,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:19,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:19,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:19,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:19,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:19,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:19,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:19,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:19,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:19,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:19,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:19,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:19,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:19,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:19,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:19,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:19,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:19,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:19,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:19,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:19,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:19,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:19,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:19,492 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 17:44:19,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:19,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:19,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:19,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:19,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:19,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:19,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:19,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:19,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:19,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:19,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:19,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:19,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:19,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:19,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:19,514 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:19,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:19,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:19,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:19,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:19,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:19,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:19,516 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:20,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:20,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:20,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:20,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:20,033 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:20,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5liff.c [2020-09-04 17:44:20,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/068ca2bc0/303cf484adc649e6b1cf42501bd46ad5/FLAGfa8ed89ee [2020-09-04 17:44:20,710 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:20,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5liff.c [2020-09-04 17:44:20,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/068ca2bc0/303cf484adc649e6b1cf42501bd46ad5/FLAGfa8ed89ee [2020-09-04 17:44:21,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/068ca2bc0/303cf484adc649e6b1cf42501bd46ad5 [2020-09-04 17:44:21,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:21,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:21,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:21,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:21,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:21,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21, skipping insertion in model container [2020-09-04 17:44:21,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:21,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:21,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:21,340 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:21,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:21,382 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:21,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21 WrapperNode [2020-09-04 17:44:21,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:21,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:21,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:21,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:21,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (1/1) ... [2020-09-04 17:44:21,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:21,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:21,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:21,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:21,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (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 17:44:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:21,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:21,920 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:44:21,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:21 BoogieIcfgContainer [2020-09-04 17:44:21,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:21,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:21,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:21,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:21,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:21" (1/3) ... [2020-09-04 17:44:21,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f83125e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:21, skipping insertion in model container [2020-09-04 17:44:21,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:21" (2/3) ... [2020-09-04 17:44:21,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f83125e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:21, skipping insertion in model container [2020-09-04 17:44:21,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:21" (3/3) ... [2020-09-04 17:44:21,939 INFO L109 eAbstractionObserver]: Analyzing ICFG s5liff.c [2020-09-04 17:44:21,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:21,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:21,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:22,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:22,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:22,027 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:22,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:22,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:22,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:22,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:22,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-04 17:44:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:22,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:22,077 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] [2020-09-04 17:44:22,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-09-04 17:44:22,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:22,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331488988] [2020-09-04 17:44:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:22,173 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,393 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 17:44:22,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331488988] [2020-09-04 17:44:22,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:22,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:22,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303774041] [2020-09-04 17:44:22,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:22,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:22,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:22,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:22,427 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-09-04 17:44:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:22,674 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-09-04 17:44:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:22,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 17:44:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:22,689 INFO L225 Difference]: With dead ends: 125 [2020-09-04 17:44:22,689 INFO L226 Difference]: Without dead ends: 59 [2020-09-04 17:44:22,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 17:44:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-04 17:44:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-04 17:44:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 17:44:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-04 17:44:22,760 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-04 17:44:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:22,761 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-04 17:44:22,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-04 17:44:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:22,763 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] [2020-09-04 17:44:22,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:22,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-09-04 17:44:22,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613042236] [2020-09-04 17:44:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:22,768 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,891 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 17:44:22,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613042236] [2020-09-04 17:44:22,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:22,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:22,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056609728] [2020-09-04 17:44:22,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:22,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:22,894 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-09-04 17:44:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:23,141 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-09-04 17:44:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:23,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 17:44:23,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:23,143 INFO L225 Difference]: With dead ends: 115 [2020-09-04 17:44:23,144 INFO L226 Difference]: Without dead ends: 84 [2020-09-04 17:44:23,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:44:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-04 17:44:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-09-04 17:44:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 17:44:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-04 17:44:23,162 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-09-04 17:44:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:23,162 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-04 17:44:23,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-04 17:44:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 17:44:23,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:23,165 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, 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 17:44:23,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:23,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-09-04 17:44:23,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:23,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913093382] [2020-09-04 17:44:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:23,195 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:23,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:23,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:23,374 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:23,374 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:23,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:23,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:23 BoogieIcfgContainer [2020-09-04 17:44:23,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:23,404 INFO L168 Benchmark]: Toolchain (without parser) took 2353.79 ms. Allocated memory was 141.6 MB in the beginning and 232.3 MB in the end (delta: 90.7 MB). Free memory was 105.2 MB in the beginning and 185.0 MB in the end (delta: -79.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:23,405 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:23,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.31 ms. Allocated memory is still 141.6 MB. Free memory was 105.0 MB in the beginning and 94.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:23,407 INFO L168 Benchmark]: Boogie Preprocessor took 130.71 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:23,408 INFO L168 Benchmark]: RCFGBuilder took 412.38 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 160.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:23,409 INFO L168 Benchmark]: TraceAbstraction took 1471.54 ms. Allocated memory was 203.4 MB in the beginning and 232.3 MB in the end (delta: 28.8 MB). Free memory was 160.1 MB in the beginning and 185.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:23,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.31 ms. Allocated memory is still 141.6 MB. Free memory was 105.0 MB in the beginning and 94.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.71 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.38 ms. Allocated memory is still 203.4 MB. Free memory was 181.3 MB in the beginning and 160.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1471.54 ms. Allocated memory was 203.4 MB in the beginning and 232.3 MB in the end (delta: 28.8 MB). Free memory was 160.1 MB in the beginning and 185.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i