/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 interpolation-heuristic=FIRST --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/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:27,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:27,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:27,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:02:27,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:02:27,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:02:27,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:02:27,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:02:27,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:02:27,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:02:27,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:02:27,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:02:27,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:27,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:27,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:27,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:27,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:27,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:27,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:27,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:27,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:27,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:27,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:27,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:27,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:02:27,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:02:27,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:02:27,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:02:27,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:02:27,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:02:27,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:02:27,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:02:27,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:02:27,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:02:27,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:02:27,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:02:27,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:02:27,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:02:27,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:27,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:27,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:27,575 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 15:02:27,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:27,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:27,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:27,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:27,621 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:27,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:27,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:27,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:27,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:27,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:27,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:27,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:27,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:27,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:27,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:27,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:27,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:27,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:27,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:27,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:27,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:27,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:27,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:27,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:27,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:27,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:27,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:27,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:27,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:27,627 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:27,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:27,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:27,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:27,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:27,933 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:27,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-21 15:02:28,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cbf729e/4d86cb6962fd432ea154673e40eeb15f/FLAG9b8ebadd3 [2020-08-21 15:02:28,469 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:28,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-21 15:02:28,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cbf729e/4d86cb6962fd432ea154673e40eeb15f/FLAG9b8ebadd3 [2020-08-21 15:02:28,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cbf729e/4d86cb6962fd432ea154673e40eeb15f [2020-08-21 15:02:28,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:02:28,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:02:28,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:28,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:02:28,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:02:28,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:28" (1/1) ... [2020-08-21 15:02:28,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:28, skipping insertion in model container [2020-08-21 15:02:28,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:28" (1/1) ... [2020-08-21 15:02:28,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:02:28,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:02:29,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:29,175 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:02:29,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:29,294 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:02:29,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29 WrapperNode [2020-08-21 15:02:29,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:29,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:02:29,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:02:29,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:02:29,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (1/1) ... [2020-08-21 15:02:29,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:02:29,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:02:29,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:02:29,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:02:29,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (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 15:02:29,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:02:29,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:02:29,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:02:29,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:02:29,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:02:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:02:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:02:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:02:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:02:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:02:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:02:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:02:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:02:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:02:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:02:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:02:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:02:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:02:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:02:29,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:02:29,726 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 15:02:29,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:29 BoogieIcfgContainer [2020-08-21 15:02:29,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:02:29,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:02:29,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:02:29,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:02:29,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:02:28" (1/3) ... [2020-08-21 15:02:29,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d37b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:29, skipping insertion in model container [2020-08-21 15:02:29,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:29" (2/3) ... [2020-08-21 15:02:29,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d37b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:29, skipping insertion in model container [2020-08-21 15:02:29,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:29" (3/3) ... [2020-08-21 15:02:29,743 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-08-21 15:02:29,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:02:29,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:02:29,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:02:29,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:02:29,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:02:29,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:02:29,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:02:29,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:02:29,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:02:29,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:02:29,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:02:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 15:02:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:02:29,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:29,817 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 15:02:29,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:29,822 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 15:02:29,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:29,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106015567] [2020-08-21 15:02:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,071 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 15:02:30,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106015567] [2020-08-21 15:02:30,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:30,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:02:30,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-08-21 15:02:30,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:02:30,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:02:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:30,103 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 15:02:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:30,207 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 15:02:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:02:30,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 15:02:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:30,219 INFO L225 Difference]: With dead ends: 54 [2020-08-21 15:02:30,220 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 15:02:30,224 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 15:02:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 15:02:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 15:02:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 15:02:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 15:02:30,260 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 15:02:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:30,261 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 15:02:30,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:02:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 15:02:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:02:30,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:30,262 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 15:02:30,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:02:30,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 15:02:30,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:30,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765939407] [2020-08-21 15:02:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,402 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 15:02:30,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765939407] [2020-08-21 15:02:30,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:30,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:02:30,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074362303] [2020-08-21 15:02:30,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:02:30,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:30,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:02:30,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:02:30,406 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 15:02:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:30,539 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 15:02:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:02:30,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 15:02:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:30,541 INFO L225 Difference]: With dead ends: 40 [2020-08-21 15:02:30,541 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 15:02:30,542 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 15:02:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 15:02:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-21 15:02:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 15:02:30,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-21 15:02:30,551 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-21 15:02:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:30,551 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-21 15:02:30,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:02:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-21 15:02:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 15:02:30,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:30,553 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] [2020-08-21 15:02:30,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:02:30,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 15:02:30,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:30,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686717479] [2020-08-21 15:02:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:30,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:31,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686717479] [2020-08-21 15:02:31,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:02:31,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:02:31,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587723192] [2020-08-21 15:02:31,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:02:31,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:02:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:02:31,009 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-21 15:02:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:31,464 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-21 15:02:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 15:02:31,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-21 15:02:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:31,468 INFO L225 Difference]: With dead ends: 42 [2020-08-21 15:02:31,468 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 15:02:31,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-21 15:02:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 15:02:31,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-21 15:02:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 15:02:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 15:02:31,478 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-21 15:02:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:31,479 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 15:02:31,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:02:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 15:02:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 15:02:31,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:31,480 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] [2020-08-21 15:02:31,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:02:31,481 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:31,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-21 15:02:31,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:31,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086169132] [2020-08-21 15:02:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:31,496 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 15:02:31,496 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 15:02:31,497 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:02:31,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:02:31,519 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 15:02:31,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:02:31 BoogieIcfgContainer [2020-08-21 15:02:31,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:02:31,522 INFO L168 Benchmark]: Toolchain (without parser) took 2618.49 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 104.2 MB in the beginning and 138.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,523 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.83 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 182.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,525 INFO L168 Benchmark]: Boogie Preprocessor took 43.65 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,526 INFO L168 Benchmark]: RCFGBuilder took 390.19 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 162.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,528 INFO L168 Benchmark]: TraceAbstraction took 1787.77 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 162.7 MB in the beginning and 138.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:31,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.83 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 182.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.65 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.19 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 162.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1787.77 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 162.7 MB in the beginning and 138.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] sum[0] = 1 [L30] i=0 [L30] COND TRUE i