/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:03:37,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:03:37,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:03:37,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:03:37,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:03:37,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:03:37,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:03:37,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:03:37,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:03:37,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:03:37,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:03:37,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:03:37,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:03:37,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:03:37,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:03:37,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:03:37,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:03:37,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:03:37,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:03:37,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:03:37,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:03:37,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:03:37,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:03:37,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:03:37,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:03:37,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:03:37,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:03:37,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:03:37,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:03:37,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:03:37,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:03:37,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:03:37,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:03:37,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:03:37,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:03:37,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:03:37,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:03:37,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:03:37,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:03:37,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:03:37,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:03:37,928 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 [2020-08-21 19:03:37,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:03:37,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:03:37,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:03:37,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:03:37,971 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:03:37,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:03:37,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:03:37,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:03:37,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:03:37,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:03:37,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:03:37,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:03:37,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:03:37,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:03:37,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:03:37,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:03:37,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:03:37,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:03:37,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:03:37,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:03:37,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:03:37,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:03:37,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:03:37,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:03:37,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:03:37,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:03:37,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:03:37,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:03:37,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:03:37,978 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:03:38,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:03:38,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:03:38,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:03:38,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:03:38,347 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:03:38,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-21 19:03:38,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a7233ba0/d2f237b5cc814ad58e9ec0003464a61f/FLAG65777f7fc [2020-08-21 19:03:38,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:03:38,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-21 19:03:38,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a7233ba0/d2f237b5cc814ad58e9ec0003464a61f/FLAG65777f7fc [2020-08-21 19:03:39,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a7233ba0/d2f237b5cc814ad58e9ec0003464a61f [2020-08-21 19:03:39,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:03:39,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:03:39,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:39,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:03:39,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:03:39,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605628e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39, skipping insertion in model container [2020-08-21 19:03:39,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:03:39,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:03:39,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:39,524 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:03:39,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:39,646 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:03:39,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39 WrapperNode [2020-08-21 19:03:39,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:39,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:03:39,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:03:39,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:03:39,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (1/1) ... [2020-08-21 19:03:39,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:03:39,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:03:39,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:03:39,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:03:39,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (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 [2020-08-21 19:03:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:03:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:03:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:03:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:03:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:03:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:03:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:03:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:03:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:03:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:03:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:03:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:03:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:03:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:03:40,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:03:40,038 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 19:03:40,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:40 BoogieIcfgContainer [2020-08-21 19:03:40,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:03:40,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:03:40,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:03:40,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:03:40,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:03:39" (1/3) ... [2020-08-21 19:03:40,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:40, skipping insertion in model container [2020-08-21 19:03:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:39" (2/3) ... [2020-08-21 19:03:40,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:40, skipping insertion in model container [2020-08-21 19:03:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:40" (3/3) ... [2020-08-21 19:03:40,051 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-08-21 19:03:40,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:03:40,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:03:40,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:03:40,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:03:40,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:03:40,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:03:40,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:03:40,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:03:40,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:03:40,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:03:40,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:03:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-21 19:03:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:03:40,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:40,141 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] [2020-08-21 19:03:40,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-21 19:03:40,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:40,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109387263] [2020-08-21 19:03:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:40,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109387263] [2020-08-21 19:03:40,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:40,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:03:40,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381998390] [2020-08-21 19:03:40,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:03:40,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:03:40,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:03:40,392 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-21 19:03:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:40,541 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-21 19:03:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:03:40,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 19:03:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:40,563 INFO L225 Difference]: With dead ends: 56 [2020-08-21 19:03:40,563 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 19:03:40,567 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 [2020-08-21 19:03:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 19:03:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-21 19:03:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 19:03:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-08-21 19:03:40,607 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-08-21 19:03:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:40,608 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-08-21 19:03:40,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:03:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-08-21 19:03:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:03:40,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:40,609 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] [2020-08-21 19:03:40,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:03:40,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-21 19:03:40,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:40,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356974752] [2020-08-21 19:03:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:40,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356974752] [2020-08-21 19:03:40,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:40,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:03:40,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47314362] [2020-08-21 19:03:40,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:03:40,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:40,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:03:40,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:03:40,736 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-08-21 19:03:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:40,896 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-21 19:03:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:03:40,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 19:03:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:40,898 INFO L225 Difference]: With dead ends: 45 [2020-08-21 19:03:40,898 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 19:03:40,899 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 [2020-08-21 19:03:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 19:03:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-21 19:03:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 19:03:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 19:03:40,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-08-21 19:03:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:40,909 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 19:03:40,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:03:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 19:03:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 19:03:40,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:40,911 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] [2020-08-21 19:03:40,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:03:40,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:40,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:40,912 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-21 19:03:40,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:40,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657625233] [2020-08-21 19:03:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:03:41,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657625233] [2020-08-21 19:03:41,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:41,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:03:41,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133707776] [2020-08-21 19:03:41,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:03:41,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:03:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:03:41,094 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-08-21 19:03:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:41,309 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-08-21 19:03:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:03:41,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-21 19:03:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:41,311 INFO L225 Difference]: With dead ends: 39 [2020-08-21 19:03:41,311 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 19:03:41,312 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 [2020-08-21 19:03:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 19:03:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-21 19:03:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 19:03:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 19:03:41,319 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-08-21 19:03:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:41,320 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 19:03:41,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:03:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 19:03:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:03:41,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:41,321 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] [2020-08-21 19:03:41,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:03:41,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:41,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:41,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-08-21 19:03:41,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:41,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904668563] [2020-08-21 19:03:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:41,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904668563] [2020-08-21 19:03:41,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:03:41,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 19:03:41,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334448795] [2020-08-21 19:03:41,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:03:41,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:41,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:03:41,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:03:41,448 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-08-21 19:03:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:41,592 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-08-21 19:03:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:03:41,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-21 19:03:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:41,594 INFO L225 Difference]: With dead ends: 54 [2020-08-21 19:03:41,594 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 19:03:41,595 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 [2020-08-21 19:03:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 19:03:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 19:03:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 19:03:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-21 19:03:41,602 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2020-08-21 19:03:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:41,603 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-21 19:03:41,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:03:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-21 19:03:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 19:03:41,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:41,604 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] [2020-08-21 19:03:41,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:03:41,605 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1781264291, now seen corresponding path program 2 times [2020-08-21 19:03:41,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:41,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489330785] [2020-08-21 19:03:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 19:03:41,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489330785] [2020-08-21 19:03:41,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:03:41,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 19:03:41,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914623746] [2020-08-21 19:03:41,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:03:41,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:03:41,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:03:41,736 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-08-21 19:03:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:41,834 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-08-21 19:03:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:03:41,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-21 19:03:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:41,836 INFO L225 Difference]: With dead ends: 55 [2020-08-21 19:03:41,836 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 19:03:41,837 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 [2020-08-21 19:03:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 19:03:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-08-21 19:03:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 19:03:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-21 19:03:41,843 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2020-08-21 19:03:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-21 19:03:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:03:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-21 19:03:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 19:03:41,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:41,845 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] [2020-08-21 19:03:41,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:03:41,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:41,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-08-21 19:03:41,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:41,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199022501] [2020-08-21 19:03:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:42,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199022501] [2020-08-21 19:03:42,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:03:42,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 19:03:42,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849057281] [2020-08-21 19:03:42,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:03:42,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:42,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:03:42,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:03:42,165 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2020-08-21 19:03:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:42,672 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-08-21 19:03:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:03:42,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-08-21 19:03:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:42,673 INFO L225 Difference]: With dead ends: 46 [2020-08-21 19:03:42,673 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 19:03:42,675 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 [2020-08-21 19:03:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 19:03:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-08-21 19:03:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 19:03:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-08-21 19:03:42,685 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-08-21 19:03:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:42,686 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-08-21 19:03:42,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:03:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-08-21 19:03:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 19:03:42,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:42,687 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] [2020-08-21 19:03:42,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:03:42,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-08-21 19:03:42,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:42,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291631183] [2020-08-21 19:03:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:42,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291631183] [2020-08-21 19:03:42,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:03:42,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:03:42,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367253986] [2020-08-21 19:03:42,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:03:42,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:03:42,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:03:42,791 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2020-08-21 19:03:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:42,972 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-08-21 19:03:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:03:42,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-08-21 19:03:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:42,974 INFO L225 Difference]: With dead ends: 66 [2020-08-21 19:03:42,975 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 19:03:42,975 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 [2020-08-21 19:03:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 19:03:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-21 19:03:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 19:03:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-21 19:03:42,983 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-08-21 19:03:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:42,984 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-21 19:03:42,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:03:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-21 19:03:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-21 19:03:42,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:42,985 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] [2020-08-21 19:03:42,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:03:42,986 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:42,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-08-21 19:03:42,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:42,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821183220] [2020-08-21 19:03:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:03:43,017 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:03:43,018 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:03:43,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:03:43,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:03:43 BoogieIcfgContainer [2020-08-21 19:03:43,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:03:43,045 INFO L168 Benchmark]: Toolchain (without parser) took 3774.14 ms. Allocated memory was 137.9 MB in the beginning and 249.6 MB in the end (delta: 111.7 MB). Free memory was 101.1 MB in the beginning and 130.8 MB in the end (delta: -29.7 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,046 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.11 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 179.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,048 INFO L168 Benchmark]: Boogie Preprocessor took 37.70 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,049 INFO L168 Benchmark]: RCFGBuilder took 357.47 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 160.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,050 INFO L168 Benchmark]: TraceAbstraction took 2998.78 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 160.0 MB in the beginning and 130.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,054 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.11 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 179.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.70 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.47 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 160.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2998.78 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 160.0 MB in the beginning and 130.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 77.9 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