/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/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:04,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:04,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:04,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:04,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:04,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:04,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:04,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:04,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:04,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:04,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:04,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:04,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:04,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:04,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:04,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:04,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:04,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:04,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:04,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:04,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:04,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:04,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:04,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:04,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:04,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:04,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:04,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:04,855 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 17:44:04,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:04,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:04,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:04,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:04,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:04,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:04,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:04,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:04,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:04,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:04,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:04,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:04,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:04,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:04,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:04,884 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:04,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:04,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:04,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:04,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:04,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:04,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:04,887 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:05,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:05,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:05,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:05,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:05,394 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:05,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2020-09-04 17:44:05,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/836b7efbb/9f010f81331f4042b26b1bc6014a92c1/FLAG9b29e2f3f [2020-09-04 17:44:06,072 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:06,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2f.c [2020-09-04 17:44:06,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/836b7efbb/9f010f81331f4042b26b1bc6014a92c1/FLAG9b29e2f3f [2020-09-04 17:44:06,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/836b7efbb/9f010f81331f4042b26b1bc6014a92c1 [2020-09-04 17:44:06,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:06,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:06,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:06,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:06,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:06,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,444 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 05:44:06, skipping insertion in model container [2020-09-04 17:44:06,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:06,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:06,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:06,769 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:06,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:06,821 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:06,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06 WrapperNode [2020-09-04 17:44:06,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:06,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:06,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:06,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:06,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (1/1) ... [2020-09-04 17:44:06,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:06,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:06,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:06,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:06,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (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 17:44:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:07,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:07,508 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 17:44:07,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:07 BoogieIcfgContainer [2020-09-04 17:44:07,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:07,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:07,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:07,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:07,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:06" (1/3) ... [2020-09-04 17:44:07,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670bbe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:07, skipping insertion in model container [2020-09-04 17:44:07,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:06" (2/3) ... [2020-09-04 17:44:07,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670bbe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:07, skipping insertion in model container [2020-09-04 17:44:07,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:07" (3/3) ... [2020-09-04 17:44:07,527 INFO L109 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-09-04 17:44:07,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:07,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:07,575 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:07,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:07,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:07,604 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:07,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:07,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:07,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:07,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:07,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-04 17:44:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 17:44:07,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:07,646 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] [2020-09-04 17:44:07,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:07,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2093857558, now seen corresponding path program 1 times [2020-09-04 17:44:07,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:07,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447267649] [2020-09-04 17:44:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:07,761 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,001 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 17:44:08,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447267649] [2020-09-04 17:44:08,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:08,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:08,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949173175] [2020-09-04 17:44:08,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:08,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:08,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:08,034 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-09-04 17:44:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:08,448 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-09-04 17:44:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:08,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-04 17:44:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:08,462 INFO L225 Difference]: With dead ends: 167 [2020-09-04 17:44:08,462 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 17:44:08,467 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 17:44:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 17:44:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-04 17:44:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-04 17:44:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-09-04 17:44:08,530 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 43 [2020-09-04 17:44:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:08,531 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-09-04 17:44:08,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-09-04 17:44:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 17:44:08,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:08,534 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] [2020-09-04 17:44:08,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:08,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash 314218562, now seen corresponding path program 1 times [2020-09-04 17:44:08,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:08,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952225310] [2020-09-04 17:44:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:08,539 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,687 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 17:44:08,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952225310] [2020-09-04 17:44:08,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:08,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:08,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66589206] [2020-09-04 17:44:08,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:08,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:08,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:08,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:08,691 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 5 states. [2020-09-04 17:44:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:09,035 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2020-09-04 17:44:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:09,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-04 17:44:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:09,038 INFO L225 Difference]: With dead ends: 164 [2020-09-04 17:44:09,038 INFO L226 Difference]: Without dead ends: 116 [2020-09-04 17:44:09,041 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 17:44:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-04 17:44:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2020-09-04 17:44:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 17:44:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-04 17:44:09,060 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 43 [2020-09-04 17:44:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:09,061 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-04 17:44:09,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-04 17:44:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 17:44:09,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:09,064 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, 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 17:44:09,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:09,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1469726247, now seen corresponding path program 1 times [2020-09-04 17:44:09,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:09,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968138087] [2020-09-04 17:44:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:09,095 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:09,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:09,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:09,329 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:09,329 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:09,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:09,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:09 BoogieIcfgContainer [2020-09-04 17:44:09,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:09,359 INFO L168 Benchmark]: Toolchain (without parser) took 2924.50 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 102.7 MB in the beginning and 167.6 MB in the end (delta: -64.9 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,360 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:09,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.78 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,362 INFO L168 Benchmark]: Boogie Preprocessor took 156.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 181.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,363 INFO L168 Benchmark]: RCFGBuilder took 536.03 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,368 INFO L168 Benchmark]: TraceAbstraction took 1837.67 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 156.5 MB in the beginning and 167.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.78 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.55 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 181.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.03 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1837.67 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 156.5 MB in the beginning and 167.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 21.4 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); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i