/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:11,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:11,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:11,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:11,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:11,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:11,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:11,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:11,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:11,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:11,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:11,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:11,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:11,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:11,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:11,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:11,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:11,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:11,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:11,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:11,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:11,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:11,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:11,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:11,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:11,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:11,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:11,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:11,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:11,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:11,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:11,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:11,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:11,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:11,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:11,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:11,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:11,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:11,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:11,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:11,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:11,590 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 [2020-09-25 10:05:11,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:11,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:11,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:11,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:11,625 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:11,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:11,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:11,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:11,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:11,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:11,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:11,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:11,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:11,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:11,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:11,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:11,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:11,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:11,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:11,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:11,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:11,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:11,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:11,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:11,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:11,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:11,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:11,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:11,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:11,630 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:12,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:12,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:12,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:12,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:12,108 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:12,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-09-25 10:05:12,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d45d3b773/b8c5f9e4823a4e20a123ff800b9e46ed/FLAG9f68d2911 [2020-09-25 10:05:12,849 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:12,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-09-25 10:05:12,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d45d3b773/b8c5f9e4823a4e20a123ff800b9e46ed/FLAG9f68d2911 [2020-09-25 10:05:13,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d45d3b773/b8c5f9e4823a4e20a123ff800b9e46ed [2020-09-25 10:05:13,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:13,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:13,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:13,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:13,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:13,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13, skipping insertion in model container [2020-09-25 10:05:13,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:13,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:13,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:13,718 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:13,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:13,835 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:13,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13 WrapperNode [2020-09-25 10:05:13,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:13,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:13,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:13,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:13,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (1/1) ... [2020-09-25 10:05:13,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:13,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:13,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:13,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:13,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (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 [2020-09-25 10:05:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:14,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:14,688 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 10:05:14,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:14 BoogieIcfgContainer [2020-09-25 10:05:14,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:14,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:14,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:14,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:14,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:13" (1/3) ... [2020-09-25 10:05:14,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e5e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:14, skipping insertion in model container [2020-09-25 10:05:14,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:13" (2/3) ... [2020-09-25 10:05:14,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e5e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:14, skipping insertion in model container [2020-09-25 10:05:14,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:14" (3/3) ... [2020-09-25 10:05:14,706 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2020-09-25 10:05:14,719 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:14,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:14,757 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:14,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:14,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:14,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:14,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:14,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:14,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:14,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:14,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-09-25 10:05:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:05:14,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:14,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:14,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:14,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:14,846 INFO L82 PathProgramCache]: Analyzing trace with hash 16375073, now seen corresponding path program 1 times [2020-09-25 10:05:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:14,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833398142] [2020-09-25 10:05:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 10:05:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:15,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:05:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:15,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:05:15,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:15,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:15,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833398142] [2020-09-25 10:05:15,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:05:15,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140287450] [2020-09-25 10:05:15,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:05:15,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:05:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:05:15,528 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-09-25 10:05:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:15,778 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2020-09-25 10:05:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:05:15,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 10:05:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:15,798 INFO L225 Difference]: With dead ends: 139 [2020-09-25 10:05:15,798 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 10:05:15,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:05:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 10:05:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 10:05:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 10:05:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-09-25 10:05:15,863 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 31 [2020-09-25 10:05:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:15,864 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-09-25 10:05:15,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:05:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-09-25 10:05:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:05:15,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:15,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:15,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:15,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1364070485, now seen corresponding path program 1 times [2020-09-25 10:05:15,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:15,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226933135] [2020-09-25 10:05:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:05:15,940 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:05:15,940 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:05:15,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:15,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:05:15 BoogieIcfgContainer [2020-09-25 10:05:15,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:05:16,004 INFO L168 Benchmark]: Toolchain (without parser) took 2863.83 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 101.9 MB in the beginning and 167.7 MB in the end (delta: -65.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:16,005 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:05:16,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.78 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 169.8 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:16,007 INFO L168 Benchmark]: Boogie Preprocessor took 78.45 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 167.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:16,011 INFO L168 Benchmark]: RCFGBuilder took 778.88 ms. Allocated memory is still 202.4 MB. Free memory was 166.4 MB in the beginning and 114.1 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:16,012 INFO L168 Benchmark]: TraceAbstraction took 1293.36 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 114.1 MB in the beginning and 167.7 MB in the end (delta: -53.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:05:16,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.78 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 169.8 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.45 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 167.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 778.88 ms. Allocated memory is still 202.4 MB. Free memory was 166.4 MB in the beginning and 114.1 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1293.36 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 114.1 MB in the beginning and 167.7 MB in the end (delta: -53.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 998]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] COND FALSE !(__VERIFIER_nondet_int()) [L989] COND TRUE __VERIFIER_nondet_int() [L989] head->data = 1 [L989] head->opt = head [L990] SLL* x = head; [L992] COND FALSE !(__VERIFIER_nondet_int()) [L995] x = head [L996] COND TRUE x != ((void*)0) [L998] EXPR x->data [L998] EXPR x->data == 2 && x->opt == x [L998] COND TRUE !(x->data == 2 && x->opt == x) [L998] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 102 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...