/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:48:54,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:48:54,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:48:54,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:48:54,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:48:54,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:48:54,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:48:54,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:48:54,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:48:54,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:48:54,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:48:54,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:48:54,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:48:54,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:48:54,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:48:54,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:48:54,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:48:54,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:48:54,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:48:54,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:48:54,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:48:54,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:48:54,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:48:54,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:48:54,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:48:54,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:48:54,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:48:54,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:48:54,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:48:54,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:48:54,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:48:54,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:48:54,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:48:54,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:48:54,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:48:54,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:48:54,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:48:54,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:48:54,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:48:54,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:48:54,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:48:54,187 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 [2020-09-24 21:48:54,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:48:54,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:48:54,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:48:54,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:48:54,218 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:48:54,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:48:54,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:48:54,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:48:54,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:48:54,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:48:54,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:48:54,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:48:54,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:48:54,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:48:54,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:48:54,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:48:54,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:48:54,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:48:54,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:48:54,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:48:54,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:48:54,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:48:54,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:48:54,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:48:54,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:48:54,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:48:54,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:48:54,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:48:54,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:48:54,227 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:48:54,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:48:54,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:48:54,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:48:54,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:48:54,786 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:48:54,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-24 21:48:54,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c6813f0/72ec234ed4e042e0aac7b2c3ab8143cc/FLAG260d453b6 [2020-09-24 21:48:55,442 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:48:55,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-24 21:48:55,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c6813f0/72ec234ed4e042e0aac7b2c3ab8143cc/FLAG260d453b6 [2020-09-24 21:48:55,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c6813f0/72ec234ed4e042e0aac7b2c3ab8143cc [2020-09-24 21:48:55,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:48:55,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:48:55,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:55,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:48:55,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:48:55,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45241865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:55, skipping insertion in model container [2020-09-24 21:48:55,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:55" (1/1) ... [2020-09-24 21:48:55,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:48:55,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:48:56,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:56,089 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:48:56,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:56,213 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:48:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56 WrapperNode [2020-09-24 21:48:56,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:56,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:48:56,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:48:56,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:48:56,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (1/1) ... [2020-09-24 21:48:56,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:48:56,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:48:56,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:48:56,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:48:56,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (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 [2020-09-24 21:48:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:48:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:48:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:48:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:48:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:48:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:48:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:48:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:48:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:48:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:48:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:48:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:48:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:48:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:48:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:48:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:48:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:48:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:48:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:48:56,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:48:56,716 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:48:56,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:56 BoogieIcfgContainer [2020-09-24 21:48:56,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:48:56,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:48:56,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:48:56,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:48:56,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:48:55" (1/3) ... [2020-09-24 21:48:56,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68276da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:56, skipping insertion in model container [2020-09-24 21:48:56,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:56" (2/3) ... [2020-09-24 21:48:56,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68276da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:56, skipping insertion in model container [2020-09-24 21:48:56,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:56" (3/3) ... [2020-09-24 21:48:56,735 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-09-24 21:48:56,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:48:56,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:48:56,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:48:56,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:48:56,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:48:56,805 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:48:56,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:48:56,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:48:56,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:48:56,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:48:56,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:48:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 21:48:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:48:56,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:56,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:48:56,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 21:48:56,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:56,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128290525] [2020-09-24 21:48:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:48:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:48:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-24 21:48:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:48:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:48:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:48:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:48:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:48:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:48:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:48:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:48:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:57,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:48:57,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:48:57,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:48:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:48:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:48:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128290525] [2020-09-24 21:48:57,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:48:57,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:48:57,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992511255] [2020-09-24 21:48:57,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:48:57,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:48:57,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:48:57,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:48:57,669 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-09-24 21:48:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:48:57,934 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2020-09-24 21:48:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:48:57,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 21:48:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:48:57,948 INFO L225 Difference]: With dead ends: 107 [2020-09-24 21:48:57,949 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 21:48:57,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:48:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 21:48:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 21:48:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 21:48:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 21:48:58,012 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 21:48:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:48:58,013 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 21:48:58,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:48:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 21:48:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 21:48:58,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:58,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:48:58,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:48:58,016 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 21:48:58,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:58,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055298345] [2020-09-24 21:48:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:48:58,087 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:48:58,087 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:48:58,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:48:58,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:48:58 BoogieIcfgContainer [2020-09-24 21:48:58,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:48:58,139 INFO L168 Benchmark]: Toolchain (without parser) took 2343.52 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 102.1 MB in the beginning and 204.2 MB in the end (delta: -102.1 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,141 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.81 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 181.9 MB in the end (delta: -80.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,143 INFO L168 Benchmark]: Boogie Preprocessor took 49.52 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,144 INFO L168 Benchmark]: RCFGBuilder took 459.04 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 161.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,145 INFO L168 Benchmark]: TraceAbstraction took 1411.13 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 160.5 MB in the beginning and 204.2 MB in the end (delta: -43.8 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:48:58,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.81 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 181.9 MB in the end (delta: -80.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.52 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.04 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 161.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1411.13 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 160.5 MB in the beginning and 204.2 MB in the end (delta: -43.8 MB). Peak memory consumption was 76.0 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] i=0 [L29] COND TRUE i