/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/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:46,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:46,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:46,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:46,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:46,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:46,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:46,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:46,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:46,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:46,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:46,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:46,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:46,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:46,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:46,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:46,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:46,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:46,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:46,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:46,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:46,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:46,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:46,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:46,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:46,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:46,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:46,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:46,377 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 17:43:46,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:46,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:46,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:46,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:46,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:46,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:46,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:46,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:46,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:46,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:46,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:46,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:46,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:46,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:46,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:46,394 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:46,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:46,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:46,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:46,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:46,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:46,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:46,395 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:46,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:46,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:46,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:46,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:46,889 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:46,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-09-04 17:43:46,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25cdd76b3/14b6cb7502c04eabbf6674ab83db19ff/FLAGc1e37d23e [2020-09-04 17:43:47,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:47,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-09-04 17:43:47,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25cdd76b3/14b6cb7502c04eabbf6674ab83db19ff/FLAGc1e37d23e [2020-09-04 17:43:47,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25cdd76b3/14b6cb7502c04eabbf6674ab83db19ff [2020-09-04 17:43:47,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:47,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:47,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:47,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:47,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:47,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:47" (1/1) ... [2020-09-04 17:43:47,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:47, skipping insertion in model container [2020-09-04 17:43:47,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:47" (1/1) ... [2020-09-04 17:43:47,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:47,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:48,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:48,224 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:48,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:48,269 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:48,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48 WrapperNode [2020-09-04 17:43:48,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:48,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:48,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:48,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:48,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (1/1) ... [2020-09-04 17:43:48,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:48,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:48,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:48,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:48,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (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 17:43:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:48,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:48,957 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:43:48,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:48 BoogieIcfgContainer [2020-09-04 17:43:48,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:48,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:48,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:48,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:48,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:47" (1/3) ... [2020-09-04 17:43:48,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a4bbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:48, skipping insertion in model container [2020-09-04 17:43:48,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:48" (2/3) ... [2020-09-04 17:43:48,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a4bbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:48, skipping insertion in model container [2020-09-04 17:43:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:48" (3/3) ... [2020-09-04 17:43:48,975 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-09-04 17:43:48,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:48,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:49,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:49,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:49,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:49,045 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:49,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:49,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:49,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:49,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:49,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-04 17:43:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:43:49,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:49,079 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] [2020-09-04 17:43:49,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267314, now seen corresponding path program 1 times [2020-09-04 17:43:49,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:49,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670100854] [2020-09-04 17:43:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:49,176 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:49,385 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 17:43:49,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670100854] [2020-09-04 17:43:49,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:49,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:49,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440809693] [2020-09-04 17:43:49,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:49,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:49,421 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-09-04 17:43:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:49,671 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-09-04 17:43:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:49,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 17:43:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:49,686 INFO L225 Difference]: With dead ends: 141 [2020-09-04 17:43:49,686 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 17:43:49,691 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 17:43:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 17:43:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-04 17:43:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 17:43:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-09-04 17:43:49,757 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 37 [2020-09-04 17:43:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:49,758 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-09-04 17:43:49,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-09-04 17:43:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:43:49,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:49,760 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] [2020-09-04 17:43:49,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:49,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:49,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash -556138909, now seen corresponding path program 1 times [2020-09-04 17:43:49,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:49,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010617056] [2020-09-04 17:43:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:49,766 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:49,800 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:43:49,800 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:49,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:49,833 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:43:49,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:49 BoogieIcfgContainer [2020-09-04 17:43:49,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:49,837 INFO L168 Benchmark]: Toolchain (without parser) took 1916.01 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 112.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,839 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.38 ms. Allocated memory is still 146.3 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,841 INFO L168 Benchmark]: Boogie Preprocessor took 156.70 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 180.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,842 INFO L168 Benchmark]: RCFGBuilder took 535.49 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,843 INFO L168 Benchmark]: TraceAbstraction took 869.26 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 112.0 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:49,847 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 146.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.38 ms. Allocated memory is still 146.3 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.70 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 180.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.49 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 869.26 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 112.0 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i