/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:38:57,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:38:57,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:38:57,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:38:57,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:38:57,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:38:57,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:38:57,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:38:57,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:38:57,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:38:57,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:38:57,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:38:57,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:38:57,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:38:57,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:38:57,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:38:57,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:38:57,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:38:57,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:38:57,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:38:57,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:38:57,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:38:57,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:38:57,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:38:57,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:38:57,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:38:57,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:38:57,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:38:57,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:38:57,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:38:57,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:38:57,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:38:57,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:38:57,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:38:57,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:38:57,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:38:57,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:38:57,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:38:57,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:38:57,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:38:57,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:38:57,797 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 16:38:57,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:38:57,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:38:57,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:38:57,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:38:57,821 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:38:57,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:38:57,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:38:57,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:38:57,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:38:57,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:38:57,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:38:57,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:38:57,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:38:57,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:38:57,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:38:57,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:38:57,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:38:57,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:38:57,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:38:57,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:38:57,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:38:57,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:38:57,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:38:57,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:38:57,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:38:57,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:38:57,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:38:57,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:38:57,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:38:57,826 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:38:58,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:38:58,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:38:58,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:38:58,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:38:58,141 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:38:58,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-08-21 16:38:58,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750361e89/752c7116aa374cc1852e690a0887f319/FLAG2236359ed [2020-08-21 16:38:58,682 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:38:58,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-08-21 16:38:58,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750361e89/752c7116aa374cc1852e690a0887f319/FLAG2236359ed [2020-08-21 16:38:59,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/750361e89/752c7116aa374cc1852e690a0887f319 [2020-08-21 16:38:59,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:38:59,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:38:59,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:59,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:38:59,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:38:59,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3567e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59, skipping insertion in model container [2020-08-21 16:38:59,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:38:59,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:38:59,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:59,333 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:38:59,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:59,454 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:38:59,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59 WrapperNode [2020-08-21 16:38:59,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:59,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:38:59,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:38:59,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:38:59,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (1/1) ... [2020-08-21 16:38:59,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:38:59,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:38:59,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:38:59,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:38:59,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (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 16:38:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:38:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 16:38:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:38:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 16:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:38:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:38:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:38:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:38:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:38:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:38:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:38:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:38:59,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:38:59,888 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 16:38:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:59 BoogieIcfgContainer [2020-08-21 16:38:59,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:38:59,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:38:59,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:38:59,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:38:59,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:38:59" (1/3) ... [2020-08-21 16:38:59,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dcea256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:59, skipping insertion in model container [2020-08-21 16:38:59,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:59" (2/3) ... [2020-08-21 16:38:59,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dcea256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:59, skipping insertion in model container [2020-08-21 16:38:59,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:59" (3/3) ... [2020-08-21 16:38:59,899 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-08-21 16:38:59,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:38:59,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:38:59,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:38:59,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:38:59,950 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:38:59,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:38:59,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:38:59,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:38:59,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:38:59,951 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:38:59,951 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:38:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 16:38:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 16:38:59,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:38:59,973 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 16:38:59,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:38:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:38:59,978 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 16:38:59,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:38:59,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344026769] [2020-08-21 16:38:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,186 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 16:39:00,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344026769] [2020-08-21 16:39:00,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:00,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:39:00,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105047862] [2020-08-21 16:39:00,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:39:00,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:00,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:39:00,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:39:00,211 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 16:39:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:00,340 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 16:39:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:39:00,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 16:39:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:00,352 INFO L225 Difference]: With dead ends: 54 [2020-08-21 16:39:00,352 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 16:39:00,356 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 16:39:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 16:39:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 16:39:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 16:39:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 16:39:00,401 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 16:39:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:00,401 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 16:39:00,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:39:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 16:39:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 16:39:00,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:00,403 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 16:39:00,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:39:00,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 16:39:00,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:00,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201629004] [2020-08-21 16:39:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:00,543 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 16:39:00,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201629004] [2020-08-21 16:39:00,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:00,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:00,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513532948] [2020-08-21 16:39:00,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:00,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:00,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:00,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:00,547 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 16:39:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:00,672 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 16:39:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:00,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 16:39:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:00,674 INFO L225 Difference]: With dead ends: 40 [2020-08-21 16:39:00,674 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 16:39:00,675 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 16:39:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 16:39:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-21 16:39:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 16:39:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-21 16:39:00,683 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-21 16:39:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:00,684 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-21 16:39:00,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-21 16:39:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:39:00,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:00,685 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 16:39:00,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:39:00,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 16:39:00,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:00,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428739201] [2020-08-21 16:39:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:39:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:01,049 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 16:39:01,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428739201] [2020-08-21 16:39:01,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:39:01,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:39:01,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796053492] [2020-08-21 16:39:01,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:39:01,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:39:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:39:01,052 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-21 16:39:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:01,500 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-21 16:39:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:39:01,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-21 16:39:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:01,504 INFO L225 Difference]: With dead ends: 42 [2020-08-21 16:39:01,505 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 16:39:01,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-21 16:39:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 16:39:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-21 16:39:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 16:39:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 16:39:01,515 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-21 16:39:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:01,515 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 16:39:01,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:39:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 16:39:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:39:01,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:01,517 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 16:39:01,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:39:01,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:39:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-21 16:39:01,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:01,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917546511] [2020-08-21 16:39:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:01,538 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 16:39:01,538 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 16:39:01,539 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:39:01,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:39:01,586 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 16:39:01,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:39:01 BoogieIcfgContainer [2020-08-21 16:39:01,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:39:01,594 INFO L168 Benchmark]: Toolchain (without parser) took 2502.51 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 102.8 MB in the beginning and 141.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,597 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.93 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 180.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,600 INFO L168 Benchmark]: Boogie Preprocessor took 39.51 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 178.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,601 INFO L168 Benchmark]: RCFGBuilder took 395.19 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 161.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,603 INFO L168 Benchmark]: TraceAbstraction took 1695.11 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 161.6 MB in the beginning and 141.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:01,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.93 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 180.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.51 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 178.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.19 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 161.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1695.11 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 161.6 MB in the beginning and 141.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 53.7 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