/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:53,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:53,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:53,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:53,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:53,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:53,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:53,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:53,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:53,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:53,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:53,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:53,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:53,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:53,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:53,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:53,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:53,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:53,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:53,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:53,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:53,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:53,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:53,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:53,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:53,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:53,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:53,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:53,619 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 17:43:53,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:53,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:53,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:53,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:53,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:53,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:53,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:53,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:53,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:53,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:53,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:53,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:53,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:53,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:53,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:53,635 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:53,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:53,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:53,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:53,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:53,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:53,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:53,636 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:54,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:54,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:54,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:54,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:54,100 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:54,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-09-04 17:43:54,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/168959396/218d57f819bf414b824c0d9fb95a4ed3/FLAG9ff42516b [2020-09-04 17:43:54,727 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:54,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms1f.c [2020-09-04 17:43:54,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/168959396/218d57f819bf414b824c0d9fb95a4ed3/FLAG9ff42516b [2020-09-04 17:43:55,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/168959396/218d57f819bf414b824c0d9fb95a4ed3 [2020-09-04 17:43:55,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:55,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:55,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:55,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:55,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f592e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55, skipping insertion in model container [2020-09-04 17:43:55,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:55,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:55,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:55,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,400 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:55,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55 WrapperNode [2020-09-04 17:43:55,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:55,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:55,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:55,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:55,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:55,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:55,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:55,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (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 17:43:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:55,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:55,949 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:43:55,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:55 BoogieIcfgContainer [2020-09-04 17:43:55,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:55,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:55,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:55,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:55,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:55" (1/3) ... [2020-09-04 17:43:55,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5813f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:55, skipping insertion in model container [2020-09-04 17:43:55,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (2/3) ... [2020-09-04 17:43:55,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5813f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:55, skipping insertion in model container [2020-09-04 17:43:55,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:55" (3/3) ... [2020-09-04 17:43:55,965 INFO L109 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-09-04 17:43:55,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:55,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:56,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:56,033 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:56,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:56,033 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:56,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:56,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:56,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:56,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:56,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-09-04 17:43:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:56,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:56,063 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] [2020-09-04 17:43:56,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash -845632023, now seen corresponding path program 1 times [2020-09-04 17:43:56,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:56,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40264410] [2020-09-04 17:43:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:56,147 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,354 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 17:43:56,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40264410] [2020-09-04 17:43:56,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:56,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:56,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931629378] [2020-09-04 17:43:56,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:56,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:56,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:56,386 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-09-04 17:43:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:56,548 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-09-04 17:43:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:56,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 17:43:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:56,562 INFO L225 Difference]: With dead ends: 97 [2020-09-04 17:43:56,562 INFO L226 Difference]: Without dead ends: 45 [2020-09-04 17:43:56,567 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 17:43:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-04 17:43:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-04 17:43:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-04 17:43:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-09-04 17:43:56,620 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2020-09-04 17:43:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:56,621 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-09-04 17:43:56,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-09-04 17:43:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:56,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:56,623 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] [2020-09-04 17:43:56,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:56,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash 104990277, now seen corresponding path program 1 times [2020-09-04 17:43:56,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:56,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252561120] [2020-09-04 17:43:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:56,628 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,754 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 17:43:56,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252561120] [2020-09-04 17:43:56,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:56,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:56,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417838178] [2020-09-04 17:43:56,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:56,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:56,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:56,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:56,758 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-09-04 17:43:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:56,913 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-09-04 17:43:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:56,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 17:43:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:56,916 INFO L225 Difference]: With dead ends: 71 [2020-09-04 17:43:56,916 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 17:43:56,918 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 17:43:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 17:43:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-09-04 17:43:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 17:43:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-04 17:43:56,936 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 30 [2020-09-04 17:43:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:56,936 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-04 17:43:56,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-04 17:43:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:43:56,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:56,938 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] [2020-09-04 17:43:56,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:56,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:56,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1687643347, now seen corresponding path program 1 times [2020-09-04 17:43:56,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:56,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351910011] [2020-09-04 17:43:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:56,973 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:57,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:57,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:57,100 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:57,101 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:57,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:57,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:57 BoogieIcfgContainer [2020-09-04 17:43:57,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:57,158 INFO L168 Benchmark]: Toolchain (without parser) took 2066.17 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,159 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.15 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,164 INFO L168 Benchmark]: Boogie Preprocessor took 124.48 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,166 INFO L168 Benchmark]: RCFGBuilder took 428.71 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,167 INFO L168 Benchmark]: TraceAbstraction took 1194.25 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 93.6 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.15 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.48 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 180.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.71 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1194.25 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 93.6 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.8 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i