/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:29:49,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:29:49,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:29:49,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:29:49,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:29:49,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:29:49,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:29:49,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:29:49,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:29:49,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:29:49,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:29:49,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:29:49,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:29:49,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:29:49,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:29:49,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:29:49,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:29:49,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:29:49,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:29:49,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:29:49,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:29:49,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:29:49,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:29:49,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:29:49,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:29:49,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:29:49,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:29:49,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:29:49,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:29:49,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:29:49,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:29:49,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:29:49,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:29:49,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:29:49,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:29:49,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:29:49,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:29:49,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:29:49,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:29:49,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:29:49,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:29:49,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:29:49,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:29:49,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:29:49,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:29:49,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:29:49,909 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:29:49,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:29:49,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:29:49,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:29:49,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:29:49,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:29:49,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:29:49,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:29:49,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:29:49,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:29:49,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:29:49,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:29:49,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:29:49,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:29:49,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:29:49,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:29:49,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:29:49,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:29:49,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:29:49,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:29:49,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:29:49,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:29:49,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:29:49,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:29:49,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:29:49,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:29:50,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:29:50,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:29:50,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:29:50,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:29:50,270 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:29:50,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-08-19 04:29:50,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a22a37336/c9f39d71abb34cbebcd6569fb7f5f785/FLAG6bb18ca24 [2020-08-19 04:29:50,757 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:29:50,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-08-19 04:29:50,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a22a37336/c9f39d71abb34cbebcd6569fb7f5f785/FLAG6bb18ca24 [2020-08-19 04:29:51,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a22a37336/c9f39d71abb34cbebcd6569fb7f5f785 [2020-08-19 04:29:51,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:29:51,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:29:51,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:29:51,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:29:51,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:29:51,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e216da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51, skipping insertion in model container [2020-08-19 04:29:51,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:29:51,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:29:51,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:29:51,368 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:29:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:29:51,406 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:29:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51 WrapperNode [2020-08-19 04:29:51,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:29:51,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:29:51,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:29:51,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:29:51,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... [2020-08-19 04:29:51,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:29:51,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:29:51,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:29:51,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:29:51,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:29:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:29:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:29:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:29:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 04:29:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:29:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:29:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:29:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:29:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:29:51,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:29:51,911 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:29:51,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:29:51 BoogieIcfgContainer [2020-08-19 04:29:51,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:29:51,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:29:51,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:29:51,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:29:51,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:29:51" (1/3) ... [2020-08-19 04:29:51,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2377ffa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:29:51, skipping insertion in model container [2020-08-19 04:29:51,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:29:51" (2/3) ... [2020-08-19 04:29:51,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2377ffa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:29:51, skipping insertion in model container [2020-08-19 04:29:51,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:29:51" (3/3) ... [2020-08-19 04:29:51,924 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-08-19 04:29:51,935 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:29:51,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:29:51,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:29:51,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:29:51,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:29:51,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:29:51,979 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:29:51,979 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:29:51,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:29:51,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:29:51,980 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:29:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-08-19 04:29:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 04:29:52,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:29:52,006 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] [2020-08-19 04:29:52,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:29:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:29:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-08-19 04:29:52,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:29:52,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309064706] [2020-08-19 04:29:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:29:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:29:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:29:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:29:52,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309064706] [2020-08-19 04:29:52,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:29:52,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:29:52,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308024820] [2020-08-19 04:29:52,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:29:52,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:29:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:29:52,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:29:52,267 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-08-19 04:29:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:29:52,456 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-08-19 04:29:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:29:52,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-19 04:29:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:29:52,478 INFO L225 Difference]: With dead ends: 66 [2020-08-19 04:29:52,478 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 04:29:52,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:29:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 04:29:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 04:29:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 04:29:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-19 04:29:52,521 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-08-19 04:29:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:29:52,522 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-19 04:29:52,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:29:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-19 04:29:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 04:29:52,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:29:52,524 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] [2020-08-19 04:29:52,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:29:52,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:29:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:29:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-08-19 04:29:52,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:29:52,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347932743] [2020-08-19 04:29:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:29:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:29:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:29:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:29:52,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347932743] [2020-08-19 04:29:52,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:29:52,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:29:52,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986225531] [2020-08-19 04:29:52,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:29:52,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:29:52,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:29:52,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:29:52,678 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-19 04:29:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:29:52,883 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-08-19 04:29:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:29:52,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-19 04:29:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:29:52,887 INFO L225 Difference]: With dead ends: 62 [2020-08-19 04:29:52,887 INFO L226 Difference]: Without dead ends: 44 [2020-08-19 04:29:52,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:29:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-19 04:29:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-08-19 04:29:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 04:29:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-08-19 04:29:52,904 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-08-19 04:29:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:29:52,904 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-08-19 04:29:52,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:29:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-08-19 04:29:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 04:29:52,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:29:52,906 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, 1] [2020-08-19 04:29:52,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:29:52,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:29:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:29:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-08-19 04:29:52,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:29:52,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194133144] [2020-08-19 04:29:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:29:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:29:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:29:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:29:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:29:53,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194133144] [2020-08-19 04:29:53,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:29:53,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 04:29:53,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517235425] [2020-08-19 04:29:53,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:29:53,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:29:53,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:29:53,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:29:53,334 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2020-08-19 04:29:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:29:53,767 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-19 04:29:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:29:53,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-08-19 04:29:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:29:53,770 INFO L225 Difference]: With dead ends: 59 [2020-08-19 04:29:53,770 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 04:29:53,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:29:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 04:29:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 04:29:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 04:29:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-08-19 04:29:53,781 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 31 [2020-08-19 04:29:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:29:53,781 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-08-19 04:29:53,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:29:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-08-19 04:29:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 04:29:53,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:29:53,783 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, 1] [2020-08-19 04:29:53,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:29:53,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:29:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:29:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash -728823226, now seen corresponding path program 1 times [2020-08-19 04:29:53,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:29:53,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139535834] [2020-08-19 04:29:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:29:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:29:53,812 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:29:53,813 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:29:53,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:29:53,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:29:53 BoogieIcfgContainer [2020-08-19 04:29:53,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:29:53,844 INFO L168 Benchmark]: Toolchain (without parser) took 2734.43 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 103.7 MB in the beginning and 129.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:29:53,845 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:29:53,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 92.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:29:53,847 INFO L168 Benchmark]: Boogie Preprocessor took 120.56 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:29:53,848 INFO L168 Benchmark]: RCFGBuilder took 388.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 162.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:29:53,849 INFO L168 Benchmark]: TraceAbstraction took 1923.68 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 162.2 MB in the beginning and 129.5 MB in the end (delta: 32.8 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:29:53,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 92.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.56 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 162.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1923.68 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 162.2 MB in the beginning and 129.5 MB in the end (delta: 32.8 MB). Peak memory consumption was 64.7 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] sum[0] = 0 [L30] i=0 [L30] COND TRUE i