/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:09,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:09,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:10,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:10,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:10,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:10,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:10,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:10,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:10,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:10,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:10,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:57:10,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:57:10,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:57:10,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:57:10,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:57:10,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:57:10,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:57:10,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:57:10,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:57:10,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:57:10,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:57:10,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:57:10,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:57:10,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:57:10,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:57:10,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:57:10,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:57:10,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:57:10,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:10,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:10,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:10,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:10,064 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:10,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:10,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:10,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:10,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:10,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:10,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:10,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:10,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:10,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:10,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:10,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:10,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:10,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:10,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:10,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:10,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:10,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:10,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:10,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:10,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:10,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:10,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:10,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:10,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:10,390 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:10,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-08-22 16:57:10,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c613efb9/9559024d5c7a40d496e5eeb70bb6d8b9/FLAGd5e80ce40 [2020-08-22 16:57:10,943 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:10,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2020-08-22 16:57:10,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c613efb9/9559024d5c7a40d496e5eeb70bb6d8b9/FLAGd5e80ce40 [2020-08-22 16:57:11,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c613efb9/9559024d5c7a40d496e5eeb70bb6d8b9 [2020-08-22 16:57:11,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:11,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:11,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:11,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:11,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:11,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55571c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11, skipping insertion in model container [2020-08-22 16:57:11,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:11,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:11,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:11,566 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:11,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:11,624 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:11,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11 WrapperNode [2020-08-22 16:57:11,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:11,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:11,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:11,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:11,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (1/1) ... [2020-08-22 16:57:11,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:11,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:11,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:11,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:11,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (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 [2020-08-22 16:57:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 16:57:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:57:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:57:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:57:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:57:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:12,299 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:12,300 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:57:12,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:12 BoogieIcfgContainer [2020-08-22 16:57:12,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:12,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:12,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:12,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:12,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:11" (1/3) ... [2020-08-22 16:57:12,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f127b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:12, skipping insertion in model container [2020-08-22 16:57:12,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:11" (2/3) ... [2020-08-22 16:57:12,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f127b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:12, skipping insertion in model container [2020-08-22 16:57:12,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:12" (3/3) ... [2020-08-22 16:57:12,311 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-08-22 16:57:12,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:12,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:12,338 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:12,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:12,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:12,359 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:12,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:12,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:12,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:12,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:12,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-22 16:57:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:57:12,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:12,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:12,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-08-22 16:57:12,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:12,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48933072] [2020-08-22 16:57:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:12,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48933072] [2020-08-22 16:57:12,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:12,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:57:12,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66840451] [2020-08-22 16:57:12,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:57:12,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:12,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:57:12,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:12,626 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-08-22 16:57:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:12,727 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-22 16:57:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:57:12,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 16:57:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:12,741 INFO L225 Difference]: With dead ends: 52 [2020-08-22 16:57:12,741 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 16:57:12,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:12,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 16:57:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-22 16:57:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 16:57:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-22 16:57:12,786 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-08-22 16:57:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:12,787 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-22 16:57:12,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:57:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-22 16:57:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:57:12,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:12,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:12,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:12,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2020-08-22 16:57:12,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:12,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112674001] [2020-08-22 16:57:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:12,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112674001] [2020-08-22 16:57:12,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:12,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:57:12,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329496146] [2020-08-22 16:57:12,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:57:12,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:12,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:57:12,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:57:12,980 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-08-22 16:57:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:13,242 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-08-22 16:57:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:57:13,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 16:57:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:13,246 INFO L225 Difference]: With dead ends: 57 [2020-08-22 16:57:13,246 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 16:57:13,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 16:57:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-08-22 16:57:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:57:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-22 16:57:13,259 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-08-22 16:57:13,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:13,260 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-22 16:57:13,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:57:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-22 16:57:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 16:57:13,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:13,261 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] [2020-08-22 16:57:13,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:13,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:13,262 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-08-22 16:57:13,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:13,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633654748] [2020-08-22 16:57:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:13,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:13,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:13,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:57:13,498 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:57:13,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:57:13,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:13 BoogieIcfgContainer [2020-08-22 16:57:13,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:13,537 INFO L168 Benchmark]: Toolchain (without parser) took 2216.17 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 96.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,538 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.00 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,541 INFO L168 Benchmark]: Boogie Preprocessor took 166.57 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 177.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,542 INFO L168 Benchmark]: RCFGBuilder took 511.36 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 160.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,543 INFO L168 Benchmark]: TraceAbstraction took 1229.55 ms. Allocated memory is still 200.8 MB. Free memory was 159.9 MB in the beginning and 96.8 MB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.00 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.57 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 177.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 511.36 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 160.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1229.55 ms. Allocated memory is still 200.8 MB. Free memory was 159.9 MB in the beginning and 96.8 MB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={5:0}, B={3:0}, C={2:0}, i=0, M=1] [L18] COND TRUE i