/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:34:05,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:34:05,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:34:05,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:34:05,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:34:05,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:34:05,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:34:05,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:34:05,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:34:05,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:34:05,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:34:05,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:34:05,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:34:05,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:34:05,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:34:05,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:34:05,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:34:05,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:34:05,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:34:05,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:34:05,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:34:05,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:34:05,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:34:05,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:34:05,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:34:05,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:34:05,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:34:05,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:34:05,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:34:05,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:34:05,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:34:05,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:34:05,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:34:05,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:34:05,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:34:05,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:34:05,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:34:05,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:34:05,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:34:05,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:34:05,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:34:05,371 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 19:34:05,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:34:05,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:34:05,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:34:05,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:34:05,433 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:34:05,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:34:05,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:34:05,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:34:05,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:34:05,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:34:05,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:34:05,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:34:05,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:34:05,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:34:05,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:34:05,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:34:05,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:34:05,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:34:05,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:34:05,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:34:05,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:34:05,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:34:05,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:34:05,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:34:05,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:34:05,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:34:05,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:34:05,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:34:05,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:34:05,441 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:34:05,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:34:05,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:34:05,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:34:05,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:34:05,961 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:34:05,962 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-09-24 19:34:06,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/893e0e1b7/bc6b8dca095b4ceb914014065742cd16/FLAG7619403fc [2020-09-24 19:34:06,594 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:34:06,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-09-24 19:34:06,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/893e0e1b7/bc6b8dca095b4ceb914014065742cd16/FLAG7619403fc [2020-09-24 19:34:06,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/893e0e1b7/bc6b8dca095b4ceb914014065742cd16 [2020-09-24 19:34:06,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:34:06,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:34:06,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:06,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:34:06,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:34:06,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:06" (1/1) ... [2020-09-24 19:34:06,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:06, skipping insertion in model container [2020-09-24 19:34:06,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:06" (1/1) ... [2020-09-24 19:34:06,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:34:06,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:34:07,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:07,210 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:34:07,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:07,263 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:34:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07 WrapperNode [2020-09-24 19:34:07,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:07,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:34:07,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:34:07,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:34:07,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (1/1) ... [2020-09-24 19:34:07,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:34:07,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:34:07,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:34:07,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:34:07,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (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 19:34:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:34:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:34:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:34:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-09-24 19:34:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:34:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:34:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:34:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-09-24 19:34:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:34:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:34:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:34:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:34:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:34:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:34:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:34:07,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:34:07,765 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:34:07,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:07 BoogieIcfgContainer [2020-09-24 19:34:07,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:34:07,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:34:07,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:34:07,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:34:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:34:06" (1/3) ... [2020-09-24 19:34:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54944f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:07, skipping insertion in model container [2020-09-24 19:34:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:07" (2/3) ... [2020-09-24 19:34:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54944f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:07, skipping insertion in model container [2020-09-24 19:34:07,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:07" (3/3) ... [2020-09-24 19:34:07,798 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-09-24 19:34:07,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:34:07,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:34:07,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:34:07,870 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:34:07,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:34:07,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:34:07,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:34:07,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:34:07,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:34:07,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:34:07,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:34:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 19:34:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:34:07,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:07,902 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 19:34:07,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash -331406787, now seen corresponding path program 1 times [2020-09-24 19:34:07,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:07,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61443046] [2020-09-24 19:34:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:08,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:34:08,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-24 19:34:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:34:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 19:34:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:34:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:34:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:08,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:34:08,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:34:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:08,877 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 19:34:08,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61443046] [2020-09-24 19:34:08,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:08,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:34:08,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281291471] [2020-09-24 19:34:08,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:34:08,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:08,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:34:08,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:34:08,917 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 9 states. [2020-09-24 19:34:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:09,411 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-09-24 19:34:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:34:09,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-24 19:34:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:09,424 INFO L225 Difference]: With dead ends: 76 [2020-09-24 19:34:09,425 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 19:34:09,430 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 19:34:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 19:34:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-24 19:34:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:34:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-24 19:34:09,488 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 21 [2020-09-24 19:34:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:09,489 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-24 19:34:09,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:34:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-24 19:34:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 19:34:09,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:09,491 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 19:34:09,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:34:09,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:09,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1840112204, now seen corresponding path program 1 times [2020-09-24 19:34:09,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:09,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358166316] [2020-09-24 19:34:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:10,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:34:10,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-24 19:34:10,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:34:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 19:34:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:34:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:10,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:34:10,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:34:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-24 19:34:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:34:10,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:34:10,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:34:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:10,279 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 19:34:10,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358166316] [2020-09-24 19:34:10,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:10,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:34:10,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868510838] [2020-09-24 19:34:10,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:34:10,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:34:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:34:10,284 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states. [2020-09-24 19:34:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:10,812 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-24 19:34:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:34:10,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-09-24 19:34:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:10,814 INFO L225 Difference]: With dead ends: 49 [2020-09-24 19:34:10,814 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 19:34:10,816 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 19:34:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 19:34:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-09-24 19:34:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 19:34:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-09-24 19:34:10,826 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 31 [2020-09-24 19:34:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:10,827 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-09-24 19:34:10,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:34:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-09-24 19:34:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 19:34:10,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:10,829 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 19:34:10,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:34:10,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1122821221, now seen corresponding path program 2 times [2020-09-24 19:34:10,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:10,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309365708] [2020-09-24 19:34:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:34:10,851 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:34:10,851 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:34:10,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:34:10,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:34:10 BoogieIcfgContainer [2020-09-24 19:34:10,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:34:10,881 INFO L168 Benchmark]: Toolchain (without parser) took 3940.36 ms. Allocated memory was 115.9 MB in the beginning and 212.9 MB in the end (delta: 97.0 MB). Free memory was 73.9 MB in the beginning and 173.9 MB in the end (delta: -100.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:34:10,882 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.9 MB. Free memory was 91.4 MB in the beginning and 91.3 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. [2020-09-24 19:34:10,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.85 ms. Allocated memory was 115.9 MB in the beginning and 129.5 MB in the end (delta: 13.6 MB). Free memory was 73.3 MB in the beginning and 98.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:10,884 INFO L168 Benchmark]: Boogie Preprocessor took 126.84 ms. Allocated memory was 129.5 MB in the beginning and 164.1 MB in the end (delta: 34.6 MB). Free memory was 98.9 MB in the beginning and 149.4 MB in the end (delta: -50.5 MB). Peak memory consumption was 708.2 kB. Max. memory is 7.1 GB. [2020-09-24 19:34:10,885 INFO L168 Benchmark]: RCFGBuilder took 392.29 ms. Allocated memory is still 164.1 MB. Free memory was 149.4 MB in the beginning and 133.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:10,886 INFO L168 Benchmark]: TraceAbstraction took 3088.92 ms. Allocated memory was 164.1 MB in the beginning and 212.9 MB in the end (delta: 48.8 MB). Free memory was 133.2 MB in the beginning and 173.9 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:10,890 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.9 MB. Free memory was 91.4 MB in the beginning and 91.3 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.85 ms. Allocated memory was 115.9 MB in the beginning and 129.5 MB in the end (delta: 13.6 MB). Free memory was 73.3 MB in the beginning and 98.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.84 ms. Allocated memory was 129.5 MB in the beginning and 164.1 MB in the end (delta: 34.6 MB). Free memory was 98.9 MB in the beginning and 149.4 MB in the end (delta: -50.5 MB). Peak memory consumption was 708.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 392.29 ms. Allocated memory is still 164.1 MB. Free memory was 149.4 MB in the beginning and 133.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3088.92 ms. Allocated memory was 164.1 MB in the beginning and 212.9 MB in the end (delta: 48.8 MB). Free memory was 133.2 MB in the beginning and 173.9 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.0 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: 1.0s, 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, 0.8s 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, 1.5s 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...