/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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-adbd35c [2020-10-12 16:26:12,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:26:12,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:26:12,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:26:12,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:26:12,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:26:12,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:26:12,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:26:12,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:26:12,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:26:12,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:26:12,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:26:12,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:26:12,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:26:12,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:26:12,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:26:12,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:26:12,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:26:12,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:26:12,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:26:12,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:26:12,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:26:12,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:26:12,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:26:12,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:26:12,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:26:12,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:26:12,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:26:12,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:26:12,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:26:12,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:26:12,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:26:12,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:26:12,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:26:12,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:26:12,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:26:12,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:26:12,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:26:12,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:26:12,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:26:12,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:26:12,924 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 [2020-10-12 16:26:12,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:26:12,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:26:12,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:26:12,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:26:12,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:26:12,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:26:12,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:26:12,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:26:12,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:26:12,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:26:12,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:26:12,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:26:12,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:26:12,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:26:12,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:26:12,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:26:12,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:26:12,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:26:12,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:26:12,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:26:12,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:26:12,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:26:12,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:26:12,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:26:12,952 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:26:13,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:26:13,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:26:13,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:26:13,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:26:13,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:26:13,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-10-12 16:26:13,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a14b114/84f3ea4bb9f04722be22ea90cee51e71/FLAGc6f7d0fe7 [2020-10-12 16:26:13,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:26:13,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-10-12 16:26:13,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a14b114/84f3ea4bb9f04722be22ea90cee51e71/FLAGc6f7d0fe7 [2020-10-12 16:26:14,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78a14b114/84f3ea4bb9f04722be22ea90cee51e71 [2020-10-12 16:26:14,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:26:14,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:26:14,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:26:14,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:26:14,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:26:14,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14, skipping insertion in model container [2020-10-12 16:26:14,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:26:14,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:26:14,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:26:14,463 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:26:14,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:26:14,503 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:26:14,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14 WrapperNode [2020-10-12 16:26:14,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:26:14,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:26:14,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:26:14,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:26:14,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (1/1) ... [2020-10-12 16:26:14,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:26:14,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:26:14,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:26:14,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:26:14,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (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 [2020-10-12 16:26:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:26:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:26:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:26:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-10-12 16:26:14,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:26:14,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 16:26:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:26:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:26:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 16:26:14,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:26:14,952 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:26:14,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:26:14 BoogieIcfgContainer [2020-10-12 16:26:14,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:26:14,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:26:14,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:26:14,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:26:14,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:26:14" (1/3) ... [2020-10-12 16:26:14,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5892fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:26:14, skipping insertion in model container [2020-10-12 16:26:14,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:26:14" (2/3) ... [2020-10-12 16:26:14,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5892fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:26:14, skipping insertion in model container [2020-10-12 16:26:14,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:26:14" (3/3) ... [2020-10-12 16:26:14,986 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-10-12 16:26:15,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:26:15,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:26:15,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:26:15,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:26:15,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:26:15,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:26:15,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:26:15,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:26:15,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:26:15,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:26:15,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:26:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-12 16:26:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 16:26:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:26:15,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:26:15,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:26:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:26:15,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-10-12 16:26:15,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:26:15,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675961910] [2020-10-12 16:26:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:26:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:26:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-12 16:26:15,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:26:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:26:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:26:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:26:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:26:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:15,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:15,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:26:15,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:15,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:26:15,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:26:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:26:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:26:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:26:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:26:15,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675961910] [2020-10-12 16:26:15,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:26:15,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:26:15,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082501956] [2020-10-12 16:26:15,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:26:15,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:26:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:26:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:26:15,820 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-10-12 16:26:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:26:16,126 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-12 16:26:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:26:16,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-12 16:26:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:26:16,147 INFO L225 Difference]: With dead ends: 55 [2020-10-12 16:26:16,148 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 16:26:16,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:26:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 16:26:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-12 16:26:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 16:26:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-12 16:26:16,197 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-10-12 16:26:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:26:16,198 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-12 16:26:16,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:26:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-12 16:26:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:26:16,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:26:16,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:26:16,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:26:16,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:26:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:26:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-10-12 16:26:16,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:26:16,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764679133] [2020-10-12 16:26:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:26:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:16,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:16,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 16:26:16,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 16:26:16,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:26:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:26:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 16:26:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:26:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:26:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:26:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:26:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:26:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:26:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:26:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:26:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 16:26:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:16,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:16,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:26:16,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:26:16,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:26:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:26:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:26:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 16:26:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:26:16,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764679133] [2020-10-12 16:26:16,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:26:16,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:26:16,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199286488] [2020-10-12 16:26:16,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:26:16,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:26:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:26:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:26:16,640 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-10-12 16:26:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:26:16,928 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-12 16:26:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:26:16,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-12 16:26:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:26:16,930 INFO L225 Difference]: With dead ends: 36 [2020-10-12 16:26:16,930 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 16:26:16,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:26:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 16:26:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-12 16:26:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 16:26:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-12 16:26:16,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-10-12 16:26:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:26:16,952 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-12 16:26:16,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:26:16,952 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-12 16:26:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 16:26:16,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:26:16,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:26:16,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:26:16,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:26:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:26:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-10-12 16:26:16,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:26:16,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284442079] [2020-10-12 16:26:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:26:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 16:26:16,987 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 16:26:16,988 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 16:26:16,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:26:17,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:26:17 BoogieIcfgContainer [2020-10-12 16:26:17,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:26:17,021 INFO L168 Benchmark]: Toolchain (without parser) took 2839.00 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 103.4 MB in the beginning and 123.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,023 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.35 ms. Allocated memory is still 141.0 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,026 INFO L168 Benchmark]: Boogie Preprocessor took 141.92 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,027 INFO L168 Benchmark]: RCFGBuilder took 309.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 166.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,029 INFO L168 Benchmark]: TraceAbstraction took 2044.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.9 MB in the beginning and 123.3 MB in the end (delta: 42.6 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:26:17,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.35 ms. Allocated memory is still 141.0 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.92 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 166.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2044.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.9 MB in the beginning and 123.3 MB in the end (delta: 42.6 MB). Peak memory consumption was 73.5 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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 73 SDslu, 71 SDs, 0 SdLazy, 191 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2760 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...