/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:21:17,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:21:17,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:21:17,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:21:17,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:21:17,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:21:17,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:21:17,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:21:17,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:21:17,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:21:17,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:21:17,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 04:21:17,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:21:17,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:21:17,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:21:17,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:21:17,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:21:17,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:21:17,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:21:17,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:21:17,721 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:21:17,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:21:17,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:21:17,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:21:17,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:21:17,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:21:17,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:21:17,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:21:17,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:21:17,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:21:17,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:21:17,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:21:17,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:21:17,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:21:17,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:21:17,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:21:17,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:21:17,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:21:17,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:21:17,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:21:17,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:21:17,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:21:18,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:21:18,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:21:18,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:21:18,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:21:18,226 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:21:18,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-1.c [2020-12-22 04:21:18,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2484ac909/722f0db59a6e47deb0075bfb4a10ba50/FLAG6c53f218f [2020-12-22 04:21:19,063 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:21:19,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c [2020-12-22 04:21:19,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2484ac909/722f0db59a6e47deb0075bfb4a10ba50/FLAG6c53f218f [2020-12-22 04:21:19,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2484ac909/722f0db59a6e47deb0075bfb4a10ba50 [2020-12-22 04:21:19,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:21:19,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:21:19,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:19,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:21:19,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:21:19,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e9a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19, skipping insertion in model container [2020-12-22 04:21:19,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:21:19,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:21:19,606 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2020-12-22 04:21:19,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:19,641 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:21:19,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2020-12-22 04:21:19,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:19,692 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:21:19,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19 WrapperNode [2020-12-22 04:21:19,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:19,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:19,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:21:19,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:21:19,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:19,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:21:19,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:21:19,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:21:19,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... [2020-12-22 04:21:19,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:21:19,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:21:19,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:21:19,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:21:19,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 04:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 04:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:21:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 04:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 04:21:20,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:21:20,402 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-22 04:21:20,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:20 BoogieIcfgContainer [2020-12-22 04:21:20,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:21:20,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:21:20,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:21:20,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:21:20,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:21:19" (1/3) ... [2020-12-22 04:21:20,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321c1689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:20, skipping insertion in model container [2020-12-22 04:21:20,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:19" (2/3) ... [2020-12-22 04:21:20,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321c1689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:20, skipping insertion in model container [2020-12-22 04:21:20,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:20" (3/3) ... [2020-12-22 04:21:20,419 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-12-22 04:21:20,429 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:21:20,438 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:21:20,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:21:20,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:21:20,512 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:21:20,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:21:20,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:21:20,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:21:20,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:21:20,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:21:20,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:21:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 04:21:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:21:20,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:20,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:21:20,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:20,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2020-12-22 04:21:20,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:20,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476623009] [2020-12-22 04:21:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:21:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:21:21,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476623009] [2020-12-22 04:21:21,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:21:21,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:21:21,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605129719] [2020-12-22 04:21:21,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:21:21,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:21:21,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:21:21,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:21:21,215 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-12-22 04:21:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:21:21,411 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2020-12-22 04:21:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:21:21,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 04:21:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:21:21,425 INFO L225 Difference]: With dead ends: 60 [2020-12-22 04:21:21,425 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 04:21:21,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:21:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 04:21:21,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-12-22 04:21:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:21:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-22 04:21:21,478 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-12-22 04:21:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:21:21,482 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-22 04:21:21,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:21:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-22 04:21:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:21:21,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:21,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:21:21,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:21:21,486 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2020-12-22 04:21:21,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:21,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996938144] [2020-12-22 04:21:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:21,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:21,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:21,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:21:21,773 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:21:21,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:21:21,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:21:21 BoogieIcfgContainer [2020-12-22 04:21:21,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:21:21,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:21:21,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:21:21,818 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:21:21,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:20" (3/4) ... [2020-12-22 04:21:21,821 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:21:21,917 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/sum_array-1.c-witness.graphml [2020-12-22 04:21:21,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:21:21,922 INFO L168 Benchmark]: Toolchain (without parser) took 2514.27 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 93.6 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,922 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:21,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,932 INFO L168 Benchmark]: Boogie Preprocessor took 34.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,935 INFO L168 Benchmark]: RCFGBuilder took 618.20 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 99.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,937 INFO L168 Benchmark]: TraceAbstraction took 1409.41 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 95.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,940 INFO L168 Benchmark]: Witness Printer took 100.65 ms. Allocated memory is still 151.0 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:21,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 618.20 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 99.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1409.41 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 95.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Witness Printer took 100.65 ms. Allocated memory is still 151.0 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i