/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:53,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:53,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:53,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:53,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:53,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:53,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:53,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:53,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:53,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:53,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:53,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:53,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:53,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:53,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:53,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:53,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:53,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:53,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:53,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:53,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:53,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:53,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:53,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:53,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:53,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:53,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:53,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:53,780 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 17:43:53,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:53,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:53,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:53,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:53,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:53,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:53,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:53,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:53,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:53,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:53,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:53,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:53,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:53,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:53,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:53,796 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:53,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:53,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:53,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:53,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:53,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:53,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:53,798 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:54,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:54,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:54,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:54,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:54,330 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:54,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-09-04 17:43:54,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6d8a85/bdca2a0d2fc44416af405a4ce93d2066/FLAG8c4fce3a7 [2020-09-04 17:43:54,979 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:54,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-09-04 17:43:54,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6d8a85/bdca2a0d2fc44416af405a4ce93d2066/FLAG8c4fce3a7 [2020-09-04 17:43:55,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbd6d8a85/bdca2a0d2fc44416af405a4ce93d2066 [2020-09-04 17:43:55,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:55,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:55,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:55,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:55,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 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 17:43:55,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:55,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:55,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,640 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:55,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,683 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:55,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55 WrapperNode [2020-09-04 17:43:55,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:55,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:55,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:55,778 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 17:43:55,778 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 17:43:55,788 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 17:43:55,789 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 17:43:55,799 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 17:43:55,807 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 17:43:55,809 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 17:43:55,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:55,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:55,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:55,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:55,814 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 17:43:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:56,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:56,253 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 17:43:56,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:56 BoogieIcfgContainer [2020-09-04 17:43:56,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:56,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:56,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:56,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:56,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:55" (1/3) ... [2020-09-04 17:43:56,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3bd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:56, skipping insertion in model container [2020-09-04 17:43:56,267 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 17:43:56,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3bd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:56, skipping insertion in model container [2020-09-04 17:43:56,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:56" (3/3) ... [2020-09-04 17:43:56,270 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-09-04 17:43:56,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:56,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:56,317 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:56,348 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:56,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:56,348 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:56,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:56,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:56,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:56,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:56,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-04 17:43:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:43:56,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:56,389 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 17:43:56,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 731228111, now seen corresponding path program 1 times [2020-09-04 17:43:56,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:56,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908062402] [2020-09-04 17:43:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:56,489 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,701 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 17:43:56,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908062402] [2020-09-04 17:43:56,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:56,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:56,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001798254] [2020-09-04 17:43:56,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:56,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:56,737 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2020-09-04 17:43:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:56,966 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2020-09-04 17:43:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:56,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 17:43:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:56,981 INFO L225 Difference]: With dead ends: 145 [2020-09-04 17:43:56,982 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 17:43:56,987 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 17:43:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 17:43:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-04 17:43:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 17:43:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-04 17:43:57,049 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 37 [2020-09-04 17:43:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:57,050 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-04 17:43:57,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-04 17:43:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:43:57,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:57,052 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 17:43:57,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:57,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash 681190783, now seen corresponding path program 1 times [2020-09-04 17:43:57,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:57,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082184810] [2020-09-04 17:43:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:57,057 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,178 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 17:43:57,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082184810] [2020-09-04 17:43:57,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:57,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:57,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094005302] [2020-09-04 17:43:57,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:57,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:57,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:57,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:57,182 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2020-09-04 17:43:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:57,470 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-09-04 17:43:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:57,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-04 17:43:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:57,475 INFO L225 Difference]: With dead ends: 150 [2020-09-04 17:43:57,475 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 17:43:57,477 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 17:43:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 17:43:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2020-09-04 17:43:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 17:43:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-09-04 17:43:57,500 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 37 [2020-09-04 17:43:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:57,501 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-09-04 17:43:57,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-09-04 17:43:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-04 17:43:57,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:57,504 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] [2020-09-04 17:43:57,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:57,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1093467533, now seen corresponding path program 1 times [2020-09-04 17:43:57,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:57,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705131493] [2020-09-04 17:43:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:57,546 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:57,603 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:43:57,604 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:57,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:57,649 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:43:57,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:57 BoogieIcfgContainer [2020-09-04 17:43:57,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:57,654 INFO L168 Benchmark]: Toolchain (without parser) took 2317.36 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 102.6 MB in the beginning and 184.8 MB in the end (delta: -82.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,655 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:57,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.52 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,657 INFO L168 Benchmark]: Boogie Preprocessor took 127.90 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,658 INFO L168 Benchmark]: RCFGBuilder took 446.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,659 INFO L168 Benchmark]: TraceAbstraction took 1389.64 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 184.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,663 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.52 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.90 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1389.64 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 184.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 3.9 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i