/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/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:03:39,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:03:39,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:03:39,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:03:39,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:03:39,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:03:39,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:03:39,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:03:39,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:03:39,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:03:39,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:03:39,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:03:39,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:03:39,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:03:39,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:03:39,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:03:39,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:03:39,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:03:39,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:03:39,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:03:39,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:03:39,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:03:39,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:03:39,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:03:39,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:03:39,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:03:39,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:03:39,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:03:39,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:03:39,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:03:39,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:03:39,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:03:39,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:03:39,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:03:39,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:03:39,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:03:39,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:03:39,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:03:39,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:03:39,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:03:39,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:03:39,408 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 19:03:39,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:03:39,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:03:39,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:03:39,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:03:39,440 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:03:39,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:03:39,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:03:39,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:03:39,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:03:39,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:03:39,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:03:39,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:03:39,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:03:39,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:03:39,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:03:39,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:03:39,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:03:39,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:03:39,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:03:39,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:03:39,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:03:39,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:03:39,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:03:39,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:03:39,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:03:39,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:03:39,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:03:39,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:03:39,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:03:39,447 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 19:03:39,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:03:39,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:03:39,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:03:39,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:03:39,774 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:03:39,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-08-21 19:03:39,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5ec8ffc/17c957a6b7da455cb94eb2e4fa800535/FLAGccdc0ab65 [2020-08-21 19:03:40,344 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:03:40,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-08-21 19:03:40,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5ec8ffc/17c957a6b7da455cb94eb2e4fa800535/FLAGccdc0ab65 [2020-08-21 19:03:40,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5ec8ffc/17c957a6b7da455cb94eb2e4fa800535 [2020-08-21 19:03:40,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:03:40,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:03:40,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:40,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:03:40,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:03:40,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:40" (1/1) ... [2020-08-21 19:03:40,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc4fd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:40, skipping insertion in model container [2020-08-21 19:03:40,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:40" (1/1) ... [2020-08-21 19:03:40,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:03:40,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:03:40,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:40,961 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:03:40,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:41,002 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:03:41,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41 WrapperNode [2020-08-21 19:03:41,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:41,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:03:41,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:03:41,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:03:41,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (1/1) ... [2020-08-21 19:03:41,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:03:41,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:03:41,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:03:41,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:03:41,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (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 19:03:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:03:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:03:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:03:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:03:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:03:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:03:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:03:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:03:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:03:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:03:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:03:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:03:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:03:41,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:03:41,506 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 19:03:41,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:41 BoogieIcfgContainer [2020-08-21 19:03:41,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:03:41,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:03:41,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:03:41,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:03:41,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:03:40" (1/3) ... [2020-08-21 19:03:41,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508360a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:41, skipping insertion in model container [2020-08-21 19:03:41,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:41" (2/3) ... [2020-08-21 19:03:41,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508360a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:41, skipping insertion in model container [2020-08-21 19:03:41,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:41" (3/3) ... [2020-08-21 19:03:41,518 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-08-21 19:03:41,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:03:41,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:03:41,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:03:41,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:03:41,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:03:41,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:03:41,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:03:41,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:03:41,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:03:41,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:03:41,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:03:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 19:03:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 19:03:41,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:41,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:03:41,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__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 -88121349, now seen corresponding path program 1 times [2020-08-21 19:03:41,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:41,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100084200] [2020-08-21 19:03:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:41,806 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 19:03:41,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100084200] [2020-08-21 19:03:41,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:41,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:03:41,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369717368] [2020-08-21 19:03:41,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:03:41,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:41,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:03:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:03:41,832 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 19:03:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:41,949 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 19:03:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:03:41,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 19:03:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:41,959 INFO L225 Difference]: With dead ends: 60 [2020-08-21 19:03:41,960 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 19:03:41,964 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 19:03:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 19:03:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 19:03:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 19:03:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 19:03:42,001 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-21 19:03:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:42,002 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 19:03:42,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:03:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 19:03:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 19:03:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:42,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:03:42,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:03:42,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:42,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-21 19:03:42,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:42,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429658106] [2020-08-21 19:03:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,150 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 19:03:42,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429658106] [2020-08-21 19:03:42,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:42,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:03:42,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915801541] [2020-08-21 19:03:42,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:03:42,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:03:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:03:42,163 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-21 19:03:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:42,335 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-21 19:03:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:03:42,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-21 19:03:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:42,337 INFO L225 Difference]: With dead ends: 48 [2020-08-21 19:03:42,338 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 19:03:42,339 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 19:03:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 19:03:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-21 19:03:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 19:03:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-21 19:03:42,356 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-21 19:03:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:42,357 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-21 19:03:42,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:03:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-21 19:03:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:03:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:42,359 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, 1, 1, 1] [2020-08-21 19:03:42,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:03:42,359 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:42,360 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-21 19:03:42,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:42,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521997336] [2020-08-21 19:03:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:03:42,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521997336] [2020-08-21 19:03:42,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:03:42,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:03:42,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926477822] [2020-08-21 19:03:42,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:03:42,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:42,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:03:42,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:03:42,825 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-08-21 19:03:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:43,006 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-21 19:03:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:03:43,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-08-21 19:03:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:43,008 INFO L225 Difference]: With dead ends: 50 [2020-08-21 19:03:43,008 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 19:03:43,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:03:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 19:03:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-21 19:03:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 19:03:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 19:03:43,017 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-08-21 19:03:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:43,017 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 19:03:43,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:03:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 19:03:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:03:43,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:43,019 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, 1, 1, 1] [2020-08-21 19:03:43,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:03:43,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-08-21 19:03:43,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:43,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058980902] [2020-08-21 19:03:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:03:43,087 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:03:43,087 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:03:43,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:03:43,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:03:43 BoogieIcfgContainer [2020-08-21 19:03:43,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:03:43,118 INFO L168 Benchmark]: Toolchain (without parser) took 2425.45 ms. Allocated memory was 137.4 MB in the beginning and 229.1 MB in the end (delta: 91.8 MB). Free memory was 100.8 MB in the beginning and 162.6 MB in the end (delta: -61.8 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,120 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.64 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,122 INFO L168 Benchmark]: Boogie Preprocessor took 132.03 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 176.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,122 INFO L168 Benchmark]: RCFGBuilder took 374.31 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 158.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,124 INFO L168 Benchmark]: TraceAbstraction took 1604.38 ms. Allocated memory was 199.2 MB in the beginning and 229.1 MB in the end (delta: 29.9 MB). Free memory was 157.9 MB in the beginning and 162.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:43,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.64 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.03 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 176.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.31 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 158.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1604.38 ms. Allocated memory was 199.2 MB in the beginning and 229.1 MB in the end (delta: 29.9 MB). Free memory was 157.9 MB in the beginning and 162.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 25.2 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i