/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=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/loops/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:29:38,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:29:38,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:29:38,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:29:38,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:29:38,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:29:38,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:29:38,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:29:38,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:29:38,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:29:38,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:29:38,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:29:38,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:29:38,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:29:38,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:29:38,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:29:38,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:29:38,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:29:38,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:29:38,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:29:38,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:29:38,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:29:38,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:29:38,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:29:38,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:29:38,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:29:38,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:29:38,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:29:38,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:29:38,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:29:38,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:29:38,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:29:38,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:29:38,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:29:38,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:29:38,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:29:38,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:29:38,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:29:38,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:29:38,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:29:38,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:29:38,316 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 18:29:38,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:29:38,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:29:38,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:29:38,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:29:38,361 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:29:38,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:29:38,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:29:38,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:29:38,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:29:38,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:29:38,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:29:38,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:29:38,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:29:38,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:29:38,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:29:38,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:29:38,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:29:38,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:29:38,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:29:38,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:29:38,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:29:38,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:29:38,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:29:38,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:29:38,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:29:38,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:29:38,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:29:38,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:29:38,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:29:38,367 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:29:38,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:29:38,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:29:38,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:29:38,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:29:38,900 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:29:38,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-09-24 18:29:38,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81caee1a0/edc970f850b345e886f42c32afb0a4eb/FLAG5dccaffd5 [2020-09-24 18:29:39,545 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:29:39,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-09-24 18:29:39,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81caee1a0/edc970f850b345e886f42c32afb0a4eb/FLAG5dccaffd5 [2020-09-24 18:29:39,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81caee1a0/edc970f850b345e886f42c32afb0a4eb [2020-09-24 18:29:39,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:29:39,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:29:39,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:39,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:29:39,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:29:39,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bdfde35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39, skipping insertion in model container [2020-09-24 18:29:39,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:29:39,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:29:40,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:40,167 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:29:40,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:40,206 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:29:40,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40 WrapperNode [2020-09-24 18:29:40,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:40,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:29:40,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:29:40,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:29:40,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (1/1) ... [2020-09-24 18:29:40,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:29:40,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:29:40,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:29:40,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:29:40,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (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 18:29:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:29:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:29:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:29:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-09-24 18:29:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:29:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:29:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:29:40,422 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-09-24 18:29:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:29:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:29:40,701 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:29:40,702 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:29:40,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:40 BoogieIcfgContainer [2020-09-24 18:29:40,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:29:40,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:29:40,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:29:40,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:29:40,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:29:39" (1/3) ... [2020-09-24 18:29:40,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dab58ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:40, skipping insertion in model container [2020-09-24 18:29:40,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:40" (2/3) ... [2020-09-24 18:29:40,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dab58ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:40, skipping insertion in model container [2020-09-24 18:29:40,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:40" (3/3) ... [2020-09-24 18:29:40,718 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-09-24 18:29:40,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:29:40,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:29:40,782 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:29:40,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:29:40,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:29:40,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:29:40,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:29:40,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:29:40,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:29:40,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:29:40,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:29:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 18:29:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 18:29:40,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:40,848 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] [2020-09-24 18:29:40,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:40,855 INFO L82 PathProgramCache]: Analyzing trace with hash -331406787, now seen corresponding path program 1 times [2020-09-24 18:29:40,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:40,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887149180] [2020-09-24 18:29:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:29:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-24 18:29:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:29:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:29:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:29:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:29:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:29:41,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:41,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:29:41,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:41,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:41,759 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 18:29:41,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887149180] [2020-09-24 18:29:41,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:41,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:29:41,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721704342] [2020-09-24 18:29:41,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:29:41,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:41,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:29:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:29:41,797 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 9 states. [2020-09-24 18:29:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:42,337 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-09-24 18:29:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:29:42,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-24 18:29:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:42,352 INFO L225 Difference]: With dead ends: 76 [2020-09-24 18:29:42,352 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 18:29:42,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:29:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 18:29:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-24 18:29:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:29:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-24 18:29:42,415 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 21 [2020-09-24 18:29:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:42,416 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-24 18:29:42,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:29:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-24 18:29:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:29:42,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:42,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 18:29:42,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:29:42,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1840112204, now seen corresponding path program 1 times [2020-09-24 18:29:42,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:42,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115923363] [2020-09-24 18:29:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:42,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 18:29:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-09-24 18:29:42,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:29:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:29:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:29:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:29:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:29:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-24 18:29:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:43,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:29:43,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:29:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:29:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:29:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:29:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:29:43,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115923363] [2020-09-24 18:29:43,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:29:43,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:29:43,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790245220] [2020-09-24 18:29:43,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:29:43,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:29:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:29:43,139 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2020-09-24 18:29:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:43,652 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-24 18:29:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:29:43,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-09-24 18:29:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:43,655 INFO L225 Difference]: With dead ends: 49 [2020-09-24 18:29:43,655 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:29:43,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:29:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:29:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-09-24 18:29:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:29:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-09-24 18:29:43,677 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 31 [2020-09-24 18:29:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:43,678 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-09-24 18:29:43,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:29:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-09-24 18:29:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 18:29:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:43,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:29:43,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:29:43,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1122821221, now seen corresponding path program 2 times [2020-09-24 18:29:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607503481] [2020-09-24 18:29:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:29:43,722 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:29:43,722 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:29:43,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:29:43,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:29:43 BoogieIcfgContainer [2020-09-24 18:29:43,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:29:43,760 INFO L168 Benchmark]: Toolchain (without parser) took 3869.86 ms. Allocated memory was 142.6 MB in the beginning and 240.6 MB in the end (delta: 98.0 MB). Free memory was 106.0 MB in the beginning and 181.8 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,761 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.84 ms. Allocated memory is still 142.6 MB. Free memory was 105.3 MB in the beginning and 95.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,764 INFO L168 Benchmark]: Boogie Preprocessor took 127.33 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 95.6 MB in the beginning and 180.5 MB in the end (delta: -84.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,765 INFO L168 Benchmark]: RCFGBuilder took 372.93 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 165.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,768 INFO L168 Benchmark]: TraceAbstraction took 3044.99 ms. Allocated memory was 202.9 MB in the beginning and 240.6 MB in the end (delta: 37.7 MB). Free memory was 164.6 MB in the beginning and 181.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:43,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.84 ms. Allocated memory is still 142.6 MB. Free memory was 105.3 MB in the beginning and 95.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.33 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 95.6 MB in the beginning and 180.5 MB in the end (delta: -84.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.93 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 165.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3044.99 ms. Allocated memory was 202.9 MB in the beginning and 240.6 MB in the end (delta: 37.7 MB). Free memory was 164.6 MB in the beginning and 181.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; [L29] Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L35] CALL glob2 (pathbuf, bound) [L16] Char *p; [L18] p = pathbuf [L18] COND TRUE p <= pathlim [L20] CALL __VERIFIER_assert(p<=tmp) [L4] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(p<=tmp) [L21] *p = 1 [L18] p++ [L18] COND TRUE p <= pathlim [L20] CALL __VERIFIER_assert(p<=tmp) [L4] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(p<=tmp) [L21] *p = 1 [L18] p++ [L18] COND TRUE p <= pathlim [L20] CALL __VERIFIER_assert(p<=tmp) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 143 SDslu, 162 SDs, 0 SdLazy, 284 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 6350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...