/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=0.4 -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 06:06:50,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:06:50,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:06:50,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:06:50,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:06:50,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:06:50,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:06:50,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:06:50,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:06:50,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:06:50,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:06:50,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:06:50,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:06:50,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:06:50,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:06:50,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:06:50,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:06:50,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:06:50,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:06:50,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:06:50,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:06:50,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:06:50,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:06:50,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:06:50,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:06:50,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:06:50,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:06:50,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:06:50,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:06:50,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:06:50,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:06:50,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:06:50,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:06:50,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:06:50,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:06:50,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:06:50,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:06:50,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:06:50,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:06:50,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:06:50,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:06:50,271 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 06:06:50,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:06:50,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:06:50,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:06:50,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:06:50,295 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:06:50,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:06:50,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:06:50,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:06:50,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:06:50,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:06:50,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:06:50,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:06:50,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:06:50,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:06:50,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:06:50,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:06:50,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:06:50,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:06:50,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:06:50,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:06:50,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:06:50,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:06:50,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:06:50,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:06:50,300 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:06:50,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:06:50,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:06:50,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:06:50,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:06:50,669 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:06:50,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-19 06:06:50,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbde96da2/47ff3192a7144f299af6854e094817e6/FLAG276af15b4 [2020-08-19 06:06:51,209 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:06:51,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-19 06:06:51,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbde96da2/47ff3192a7144f299af6854e094817e6/FLAG276af15b4 [2020-08-19 06:06:51,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbde96da2/47ff3192a7144f299af6854e094817e6 [2020-08-19 06:06:51,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:06:51,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:06:51,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:06:51,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:06:51,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:06:51,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2feb0e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51, skipping insertion in model container [2020-08-19 06:06:51,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:06:51,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:06:51,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:06:51,812 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:06:51,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:06:51,930 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:06:51,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51 WrapperNode [2020-08-19 06:06:51,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:06:51,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:06:51,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:06:51,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:06:51,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (1/1) ... [2020-08-19 06:06:51,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:06:51,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:06:51,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:06:51,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:06:51,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (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 06:06:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:06:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:06:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:06:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:06:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:06:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:06:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:06:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:06:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:06:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:06:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:06:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:06:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:06:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:06:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:06:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:06:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:06:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:06:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:06:52,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:06:52,355 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-19 06:06:52,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:06:52 BoogieIcfgContainer [2020-08-19 06:06:52,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:06:52,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:06:52,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:06:52,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:06:52,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:06:51" (1/3) ... [2020-08-19 06:06:52,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb9d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:06:52, skipping insertion in model container [2020-08-19 06:06:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:06:51" (2/3) ... [2020-08-19 06:06:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deb9d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:06:52, skipping insertion in model container [2020-08-19 06:06:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:06:52" (3/3) ... [2020-08-19 06:06:52,385 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-08-19 06:06:52,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:06:52,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:06:52,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:06:52,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:06:52,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:06:52,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:06:52,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:06:52,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:06:52,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:06:52,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:06:52,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:06:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-19 06:06:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:06:52,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:52,461 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 06:06:52,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-19 06:06:52,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:52,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655776407] [2020-08-19 06:06:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:52,686 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 06:06:52,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655776407] [2020-08-19 06:06:52,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:06:52,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:06:52,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936941134] [2020-08-19 06:06:52,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:06:52,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:06:52,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:06:52,710 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-19 06:06:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:52,833 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-19 06:06:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:06:52,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 06:06:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:52,845 INFO L225 Difference]: With dead ends: 56 [2020-08-19 06:06:52,846 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 06:06:52,850 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 06:06:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 06:06:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-19 06:06:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 06:06:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-08-19 06:06:52,897 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-08-19 06:06:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:52,897 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-08-19 06:06:52,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:06:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-08-19 06:06:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:06:52,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:52,899 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 06:06:52,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:06:52,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-19 06:06:52,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:52,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193341243] [2020-08-19 06:06:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,029 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 06:06:53,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193341243] [2020-08-19 06:06:53,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:06:53,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:06:53,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727436358] [2020-08-19 06:06:53,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:06:53,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:06:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:06:53,034 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-08-19 06:06:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:53,162 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-19 06:06:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:06:53,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 06:06:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:53,164 INFO L225 Difference]: With dead ends: 45 [2020-08-19 06:06:53,165 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 06:06:53,166 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 06:06:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 06:06:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-19 06:06:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 06:06:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 06:06:53,175 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-08-19 06:06:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:53,175 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 06:06:53,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:06:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 06:06:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 06:06:53,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:53,177 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 06:06:53,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:06:53,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:53,178 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-19 06:06:53,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:53,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906117155] [2020-08-19 06:06:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,413 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 06:06:53,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906117155] [2020-08-19 06:06:53,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:06:53,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:06:53,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844184985] [2020-08-19 06:06:53,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:06:53,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:53,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:06:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:06:53,421 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-08-19 06:06:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:53,694 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-08-19 06:06:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:06:53,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-19 06:06:53,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:53,696 INFO L225 Difference]: With dead ends: 39 [2020-08-19 06:06:53,696 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 06:06:53,698 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 06:06:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 06:06:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-19 06:06:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 06:06:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 06:06:53,712 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-08-19 06:06:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:53,713 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 06:06:53,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:06:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 06:06:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 06:06:53,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:53,715 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 06:06:53,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:06:53,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-08-19 06:06:53,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:53,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474733685] [2020-08-19 06:06:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:53,822 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 06:06:53,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474733685] [2020-08-19 06:06:53,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:06:53,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 06:06:53,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392093106] [2020-08-19 06:06:53,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:06:53,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:06:53,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:06:53,825 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-08-19 06:06:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:54,012 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-08-19 06:06:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:06:54,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-19 06:06:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:54,014 INFO L225 Difference]: With dead ends: 54 [2020-08-19 06:06:54,014 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 06:06:54,015 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 06:06:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 06:06:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-19 06:06:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 06:06:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-19 06:06:54,030 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2020-08-19 06:06:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:54,031 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-19 06:06:54,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:06:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-19 06:06:54,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:06:54,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:54,033 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 06:06:54,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:06:54,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:54,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:54,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1781264291, now seen corresponding path program 2 times [2020-08-19 06:06:54,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:54,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864942211] [2020-08-19 06:06:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,187 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 06:06:54,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864942211] [2020-08-19 06:06:54,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:06:54,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 06:06:54,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231817507] [2020-08-19 06:06:54,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:06:54,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:54,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:06:54,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:06:54,190 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-08-19 06:06:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:54,310 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-08-19 06:06:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:06:54,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 06:06:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:54,312 INFO L225 Difference]: With dead ends: 55 [2020-08-19 06:06:54,312 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 06:06:54,313 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 06:06:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 06:06:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-08-19 06:06:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 06:06:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-19 06:06:54,320 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2020-08-19 06:06:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:54,321 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-19 06:06:54,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:06:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-19 06:06:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 06:06:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:54,322 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 06:06:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:06:54,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-08-19 06:06:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:54,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023640372] [2020-08-19 06:06:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:54,596 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 06:06:54,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023640372] [2020-08-19 06:06:54,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:06:54,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 06:06:54,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438346069] [2020-08-19 06:06:54,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 06:06:54,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:54,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 06:06:54,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:06:54,599 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2020-08-19 06:06:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:55,111 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-08-19 06:06:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:06:55,112 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-08-19 06:06:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:55,113 INFO L225 Difference]: With dead ends: 46 [2020-08-19 06:06:55,113 INFO L226 Difference]: Without dead ends: 40 [2020-08-19 06:06:55,114 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 06:06:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-19 06:06:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-08-19 06:06:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 06:06:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-08-19 06:06:55,127 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-08-19 06:06:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:55,128 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-08-19 06:06:55,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 06:06:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-08-19 06:06:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 06:06:55,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:55,129 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 06:06:55,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:06:55,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:55,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-08-19 06:06:55,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:55,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353952520] [2020-08-19 06:06:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:06:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:06:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:06:55,222 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 06:06:55,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353952520] [2020-08-19 06:06:55,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:06:55,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:06:55,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011575938] [2020-08-19 06:06:55,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:06:55,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:06:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:06:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:06:55,225 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2020-08-19 06:06:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:06:55,422 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-08-19 06:06:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:06:55,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-08-19 06:06:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:06:55,424 INFO L225 Difference]: With dead ends: 66 [2020-08-19 06:06:55,424 INFO L226 Difference]: Without dead ends: 44 [2020-08-19 06:06:55,425 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 06:06:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-19 06:06:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-19 06:06:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-19 06:06:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-19 06:06:55,439 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-08-19 06:06:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:06:55,440 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-19 06:06:55,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:06:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-19 06:06:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-19 06:06:55,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:06:55,446 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 06:06:55,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:06:55,446 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:06:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:06:55,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-08-19 06:06:55,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:06:55,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085977147] [2020-08-19 06:06:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:06:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:06:55,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:06:55,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:06:55,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:06:55,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:06:55 BoogieIcfgContainer [2020-08-19 06:06:55,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:06:55,568 INFO L168 Benchmark]: Toolchain (without parser) took 3968.29 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 102.8 MB in the beginning and 122.9 MB in the end (delta: -20.1 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,573 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.88 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.6 MB in the beginning and 180.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,574 INFO L168 Benchmark]: Boogie Preprocessor took 41.99 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,580 INFO L168 Benchmark]: RCFGBuilder took 385.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 161.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,581 INFO L168 Benchmark]: TraceAbstraction took 3192.87 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 161.2 MB in the beginning and 122.9 MB in the end (delta: 38.3 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:06:55,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.88 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.6 MB in the beginning and 180.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.99 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 161.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3192.87 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 161.2 MB in the beginning and 122.9 MB in the end (delta: 38.3 MB). Peak memory consumption was 82.4 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