/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=DEEPEST --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/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:40:46,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:40:46,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:40:46,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:40:46,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:40:46,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:40:46,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:40:46,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:40:46,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:40:46,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:40:46,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:40:46,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:40:46,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:40:46,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:40:46,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:40:46,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:40:46,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:40:46,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:40:46,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:40:46,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:40:46,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:40:46,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:40:46,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:40:46,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:40:46,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:40:46,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:40:46,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:40:46,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:40:46,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:40:46,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:40:46,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:40:46,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:40:46,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:40:46,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:40:46,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:40:46,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:40:46,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:40:46,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:40:46,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:40:46,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:40:46,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:40:46,482 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 20:40:46,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:40:46,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:40:46,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:40:46,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:40:46,529 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:40:46,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:40:46,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:40:46,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:40:46,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:40:46,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:40:46,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:40:46,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:40:46,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:40:46,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:40:46,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:40:46,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:40:46,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:40:46,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:40:46,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:40:46,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:40:46,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:40:46,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:40:46,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:40:46,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:40:46,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:40:46,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:40:46,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:40:46,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:40:46,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:40:46,535 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:40:46,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:40:46,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:40:46,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:40:46,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:40:46,847 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:40:46,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-08-21 20:40:46,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbeb48205/c6421462e4b44470a06bca65eecb3834/FLAGac9faa7f1 [2020-08-21 20:40:47,340 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:40:47,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-08-21 20:40:47,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbeb48205/c6421462e4b44470a06bca65eecb3834/FLAGac9faa7f1 [2020-08-21 20:40:47,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbeb48205/c6421462e4b44470a06bca65eecb3834 [2020-08-21 20:40:47,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:40:47,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:40:47,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:40:47,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:40:47,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:40:47,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:40:47" (1/1) ... [2020-08-21 20:40:47,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbcaf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:47, skipping insertion in model container [2020-08-21 20:40:47,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:40:47" (1/1) ... [2020-08-21 20:40:47,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:40:47,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:40:48,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:40:48,037 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:40:48,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:40:48,077 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:40:48,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48 WrapperNode [2020-08-21 20:40:48,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:40:48,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:40:48,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:40:48,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:40:48,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (1/1) ... [2020-08-21 20:40:48,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:40:48,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:40:48,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:40:48,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:40:48,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (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 20:40:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:40:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:40:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:40:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 20:40:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:40:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:40:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:40:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:40:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 20:40:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:40:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:40:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:40:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:40:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:40:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:40:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:40:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:40:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:40:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:40:48,533 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:40:48,533 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 20:40:48,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:40:48 BoogieIcfgContainer [2020-08-21 20:40:48,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:40:48,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:40:48,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:40:48,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:40:48,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:40:47" (1/3) ... [2020-08-21 20:40:48,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5922f917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:40:48, skipping insertion in model container [2020-08-21 20:40:48,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:40:48" (2/3) ... [2020-08-21 20:40:48,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5922f917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:40:48, skipping insertion in model container [2020-08-21 20:40:48,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:40:48" (3/3) ... [2020-08-21 20:40:48,546 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-08-21 20:40:48,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:40:48,567 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:40:48,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:40:48,631 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:40:48,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:40:48,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:40:48,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:40:48,632 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:40:48,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:40:48,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:40:48,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:40:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 20:40:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:40:48,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:48,665 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 20:40:48,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 20:40:48,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:48,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366136138] [2020-08-21 20:40:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:48,912 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 20:40:48,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366136138] [2020-08-21 20:40:48,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:40:48,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:40:48,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243900366] [2020-08-21 20:40:48,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:40:48,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:40:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:40:48,939 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 20:40:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:49,062 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 20:40:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:40:49,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 20:40:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:49,074 INFO L225 Difference]: With dead ends: 54 [2020-08-21 20:40:49,074 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 20:40:49,078 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 20:40:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 20:40:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 20:40:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 20:40:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 20:40:49,121 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 20:40:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:49,121 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 20:40:49,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:40:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 20:40:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 20:40:49,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:49,123 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 20:40:49,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:40:49,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 20:40:49,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:49,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769188288] [2020-08-21 20:40:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,273 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 20:40:49,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769188288] [2020-08-21 20:40:49,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:40:49,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 20:40:49,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645376341] [2020-08-21 20:40:49,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:40:49,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:40:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:40:49,278 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 20:40:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:49,399 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 20:40:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:40:49,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 20:40:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:49,401 INFO L225 Difference]: With dead ends: 40 [2020-08-21 20:40:49,402 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 20:40:49,403 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 20:40:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 20:40:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-21 20:40:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 20:40:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-21 20:40:49,411 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-21 20:40:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:49,412 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-21 20:40:49,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:40:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-21 20:40:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 20:40:49,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:49,413 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 20:40:49,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:40:49,414 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 20:40:49,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:49,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519846795] [2020-08-21 20:40:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:40:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:40:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:40:49,744 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 20:40:49,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519846795] [2020-08-21 20:40:49,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:40:49,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:40:49,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376797067] [2020-08-21 20:40:49,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:40:49,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:40:49,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:40:49,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:40:49,747 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-21 20:40:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:40:50,199 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-21 20:40:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 20:40:50,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-21 20:40:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:40:50,203 INFO L225 Difference]: With dead ends: 42 [2020-08-21 20:40:50,203 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 20:40:50,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:40:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 20:40:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-21 20:40:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 20:40:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 20:40:50,221 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-21 20:40:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:40:50,222 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 20:40:50,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:40:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 20:40:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 20:40:50,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:40:50,225 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 20:40:50,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:40:50,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:40:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:40:50,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-21 20:40:50,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:40:50,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31992300] [2020-08-21 20:40:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:40:50,261 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 20:40:50,264 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 20:40:50,264 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:40:50,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:40:50,283 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 20:40:50,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:40:50 BoogieIcfgContainer [2020-08-21 20:40:50,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:40:50,286 INFO L168 Benchmark]: Toolchain (without parser) took 2518.84 ms. Allocated memory was 147.3 MB in the beginning and 235.4 MB in the end (delta: 88.1 MB). Free memory was 103.3 MB in the beginning and 142.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,287 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.06 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,289 INFO L168 Benchmark]: Boogie Preprocessor took 134.59 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,290 INFO L168 Benchmark]: RCFGBuilder took 324.16 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,291 INFO L168 Benchmark]: TraceAbstraction took 1744.18 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 163.4 MB in the beginning and 142.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:40:50,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.06 ms. Allocated memory is still 147.3 MB. Free memory was 102.9 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.59 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.16 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1744.18 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 163.4 MB in the beginning and 142.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 52.6 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