/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:18:19,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:18:19,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:18:19,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:18:19,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:18:19,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:18:19,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:18:19,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:18:19,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:18:19,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:18:19,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:18:19,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:18:19,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:18:19,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:18:19,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:18:19,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:18:19,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:18:19,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:18:19,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:18:19,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:18:19,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:18:19,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:18:19,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:18:19,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:18:19,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:18:19,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:18:19,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:18:19,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:18:19,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:18:19,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:18:19,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:18:19,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:18:19,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:18:19,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:18:19,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:18:19,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:18:19,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:18:19,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:18:19,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:18:19,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:18:19,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:18:19,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:18:19,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:18:19,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:18:19,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:18:19,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:18:19,425 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:18:19,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:18:19,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:18:19,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:18:19,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:18:19,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:18:19,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:18:19,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:18:19,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:18:19,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:18:19,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:18:19,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:18:19,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:18:19,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:18:19,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:18:19,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:18:19,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:18:19,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:18:19,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:18:19,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:18:19,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:18:19,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:18:19,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:18:19,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:18:19,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:18:19,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:18:19,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:18:19,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:18:19,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:18:19,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:18:19,768 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:18:19,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-19 05:18:19,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5745858f/e34ce5c26b4a4a91be245f527acbca31/FLAGa02b9046d [2020-08-19 05:18:20,286 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:18:20,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-19 05:18:20,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5745858f/e34ce5c26b4a4a91be245f527acbca31/FLAGa02b9046d [2020-08-19 05:18:20,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5745858f/e34ce5c26b4a4a91be245f527acbca31 [2020-08-19 05:18:20,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:18:20,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:18:20,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:18:20,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:18:20,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:18:20,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:18:20" (1/1) ... [2020-08-19 05:18:20,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:20, skipping insertion in model container [2020-08-19 05:18:20,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:18:20" (1/1) ... [2020-08-19 05:18:20,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:18:20,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:18:20,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:18:20,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:18:20,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:18:21,031 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:18:21,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21 WrapperNode [2020-08-19 05:18:21,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:18:21,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:18:21,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:18:21,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:18:21,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (1/1) ... [2020-08-19 05:18:21,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:18:21,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:18:21,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:18:21,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:18:21,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (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 [2020-08-19 05:18:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:18:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:18:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:18:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 05:18:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:18:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:18:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:18:21,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:18:21,433 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-19 05:18:21,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:18:21 BoogieIcfgContainer [2020-08-19 05:18:21,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:18:21,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:18:21,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:18:21,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:18:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:18:20" (1/3) ... [2020-08-19 05:18:21,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceaebe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:18:21, skipping insertion in model container [2020-08-19 05:18:21,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:21" (2/3) ... [2020-08-19 05:18:21,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceaebe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:18:21, skipping insertion in model container [2020-08-19 05:18:21,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:18:21" (3/3) ... [2020-08-19 05:18:21,447 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-08-19 05:18:21,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:18:21,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:18:21,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:18:21,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:18:21,512 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:18:21,512 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:18:21,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:18:21,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:18:21,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:18:21,513 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:18:21,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:18:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-19 05:18:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 05:18:21,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:21,549 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] [2020-08-19 05:18:21,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-19 05:18:21,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:21,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296600134] [2020-08-19 05:18:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:18:21,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296600134] [2020-08-19 05:18:21,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:18:21,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:18:21,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789222062] [2020-08-19 05:18:21,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:18:21,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:18:21,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:18:21,839 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-19 05:18:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:21,970 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-19 05:18:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:18:21,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 05:18:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:21,989 INFO L225 Difference]: With dead ends: 56 [2020-08-19 05:18:21,990 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 05:18:21,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:18:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 05:18:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-19 05:18:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 05:18:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-08-19 05:18:22,043 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-08-19 05:18:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:22,043 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-08-19 05:18:22,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:18:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-08-19 05:18:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 05:18:22,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:22,045 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] [2020-08-19 05:18:22,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:18:22,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-19 05:18:22,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:22,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222626474] [2020-08-19 05:18:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:18:22,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222626474] [2020-08-19 05:18:22,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:18:22,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:18:22,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888019700] [2020-08-19 05:18:22,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:18:22,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:18:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:18:22,183 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-08-19 05:18:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:22,333 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-19 05:18:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:18:22,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 05:18:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:22,335 INFO L225 Difference]: With dead ends: 45 [2020-08-19 05:18:22,335 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 05:18:22,337 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 [2020-08-19 05:18:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 05:18:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-19 05:18:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 05:18:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 05:18:22,346 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-08-19 05:18:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:22,346 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 05:18:22,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:18:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 05:18:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 05:18:22,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:22,348 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] [2020-08-19 05:18:22,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:18:22,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-19 05:18:22,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:22,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028066922] [2020-08-19 05:18:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:18:22,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028066922] [2020-08-19 05:18:22,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:18:22,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:18:22,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029795631] [2020-08-19 05:18:22,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:18:22,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:22,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:18:22,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:18:22,500 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-08-19 05:18:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:22,718 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-08-19 05:18:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:18:22,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-19 05:18:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:22,720 INFO L225 Difference]: With dead ends: 39 [2020-08-19 05:18:22,720 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 05:18:22,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:18:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 05:18:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-19 05:18:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 05:18:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 05:18:22,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-08-19 05:18:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:22,729 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 05:18:22,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:18:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 05:18:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 05:18:22,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:22,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-08-19 05:18:22,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:18:22,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-08-19 05:18:22,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:22,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692588930] [2020-08-19 05:18:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:18:22,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692588930] [2020-08-19 05:18:22,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:18:22,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 05:18:22,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341023467] [2020-08-19 05:18:22,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:18:22,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:22,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:18:22,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:18:22,832 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-08-19 05:18:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:23,014 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-08-19 05:18:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:18:23,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-19 05:18:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:23,016 INFO L225 Difference]: With dead ends: 54 [2020-08-19 05:18:23,016 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 05:18:23,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:18:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 05:18:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-19 05:18:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 05:18:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-19 05:18:23,024 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2020-08-19 05:18:23,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:23,025 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-19 05:18:23,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:18:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-19 05:18:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 05:18:23,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:23,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:18:23,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:18:23,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1781264291, now seen corresponding path program 2 times [2020-08-19 05:18:23,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:23,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139776389] [2020-08-19 05:18:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 05:18:23,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139776389] [2020-08-19 05:18:23,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:18:23,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 05:18:23,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175873403] [2020-08-19 05:18:23,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:18:23,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:18:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:18:23,128 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-08-19 05:18:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:23,224 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-08-19 05:18:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:18:23,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 05:18:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:23,226 INFO L225 Difference]: With dead ends: 55 [2020-08-19 05:18:23,226 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 05:18:23,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:18:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 05:18:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-08-19 05:18:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 05:18:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-19 05:18:23,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2020-08-19 05:18:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:23,234 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-19 05:18:23,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:18:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-19 05:18:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 05:18:23,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:23,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-08-19 05:18:23,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:18:23,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:23,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-08-19 05:18:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:23,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951124039] [2020-08-19 05:18:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:18:23,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951124039] [2020-08-19 05:18:23,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:18:23,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:18:23,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546423603] [2020-08-19 05:18:23,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:18:23,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:18:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:18:23,601 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2020-08-19 05:18:24,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:24,130 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-08-19 05:18:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:18:24,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-08-19 05:18:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:24,131 INFO L225 Difference]: With dead ends: 46 [2020-08-19 05:18:24,132 INFO L226 Difference]: Without dead ends: 40 [2020-08-19 05:18:24,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:18:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-19 05:18:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-08-19 05:18:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 05:18:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-08-19 05:18:24,147 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-08-19 05:18:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:24,147 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-08-19 05:18:24,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:18:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-08-19 05:18:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 05:18:24,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:24,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:18:24,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:18:24,150 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-08-19 05:18:24,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:24,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062490668] [2020-08-19 05:18:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:18:24,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062490668] [2020-08-19 05:18:24,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:18:24,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:18:24,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636741727] [2020-08-19 05:18:24,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:18:24,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:24,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:18:24,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:18:24,273 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2020-08-19 05:18:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:24,454 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-08-19 05:18:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:18:24,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-08-19 05:18:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:24,455 INFO L225 Difference]: With dead ends: 66 [2020-08-19 05:18:24,456 INFO L226 Difference]: Without dead ends: 44 [2020-08-19 05:18:24,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:18:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-19 05:18:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-19 05:18:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-19 05:18:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-19 05:18:24,463 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-08-19 05:18:24,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:24,464 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-19 05:18:24,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:18:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-19 05:18:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-19 05:18:24,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:24,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:18:24,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:18:24,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-08-19 05:18:24,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:24,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911815902] [2020-08-19 05:18:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:18:24,496 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:18:24,496 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:18:24,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:18:24,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:18:24 BoogieIcfgContainer [2020-08-19 05:18:24,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:18:24,547 INFO L168 Benchmark]: Toolchain (without parser) took 3863.90 ms. Allocated memory was 139.5 MB in the beginning and 246.4 MB in the end (delta: 107.0 MB). Free memory was 102.8 MB in the beginning and 125.5 MB in the end (delta: -22.7 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:24,548 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 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. [2020-08-19 05:18:24,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 181.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:24,553 INFO L168 Benchmark]: Boogie Preprocessor took 45.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:24,554 INFO L168 Benchmark]: RCFGBuilder took 359.10 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 161.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:24,554 INFO L168 Benchmark]: TraceAbstraction took 3100.58 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 161.9 MB in the beginning and 125.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:24,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 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 353.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 181.2 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.10 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 161.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3100.58 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 161.9 MB in the beginning and 125.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i