/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=NARROWEST --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-simple-white-blue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:30,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:30,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:30,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:30,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:30,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:30,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:30,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:30,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:30,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:30,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:30,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:30,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:30,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:30,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:30,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:30,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:30,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:30,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:30,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:30,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:30,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:30,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:30,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:30,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:30,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:30,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:30,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:30,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:30,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:30,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:30,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:30,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:30,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:30,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:30,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:30,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:30,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:30,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:30,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:30,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:30,751 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 02:07:30,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:30,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:30,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:30,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:30,805 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:30,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:30,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:30,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:30,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:30,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:30,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:30,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:30,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:30,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:30,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:30,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:30,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:30,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:30,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:30,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:30,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:30,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:30,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:30,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:30,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:30,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:30,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:30,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:30,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:30,812 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:07:31,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:31,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:31,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:31,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:31,322 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:31,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i [2020-09-25 02:07:31,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47e0357/e9f863bc7b63417ead10ae2379fd7e5a/FLAG463424df2 [2020-09-25 02:07:32,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:32,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-1.i [2020-09-25 02:07:32,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47e0357/e9f863bc7b63417ead10ae2379fd7e5a/FLAG463424df2 [2020-09-25 02:07:32,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a47e0357/e9f863bc7b63417ead10ae2379fd7e5a [2020-09-25 02:07:32,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:32,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:32,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:32,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:32,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:32,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:32" (1/1) ... [2020-09-25 02:07:32,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1a52a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32, skipping insertion in model container [2020-09-25 02:07:32,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:32" (1/1) ... [2020-09-25 02:07:32,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:32,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:32,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:32,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:32,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:33,019 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:33,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33 WrapperNode [2020-09-25 02:07:33,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:33,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:33,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:33,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:33,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:33,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:33,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:33,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:33,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (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 02:07:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:07:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:33,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:33,850 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 02:07:33,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:33 BoogieIcfgContainer [2020-09-25 02:07:33,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:33,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:33,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:33,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:32" (1/3) ... [2020-09-25 02:07:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7519f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:33, skipping insertion in model container [2020-09-25 02:07:33,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (2/3) ... [2020-09-25 02:07:33,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7519f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:33, skipping insertion in model container [2020-09-25 02:07:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:33" (3/3) ... [2020-09-25 02:07:33,871 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2020-09-25 02:07:33,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:33,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:07:33,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:07:33,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:33,954 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:33,954 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:33,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:33,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:33,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:33,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:33,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 02:07:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:07:33,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:33,997 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 02:07:33,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash 7806853, now seen corresponding path program 1 times [2020-09-25 02:07:34,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:34,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566175000] [2020-09-25 02:07:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:34,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:34,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 02:07:34,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:34,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 02:07:34,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:07:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:07:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:34,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:34,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:34,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:07:34,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:34,632 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 02:07:34,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566175000] [2020-09-25 02:07:34,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:34,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:07:34,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840049571] [2020-09-25 02:07:34,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:07:34,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:07:34,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:34,667 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-25 02:07:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:34,893 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2020-09-25 02:07:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:07:34,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-25 02:07:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:34,912 INFO L225 Difference]: With dead ends: 168 [2020-09-25 02:07:34,912 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 02:07:34,917 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 02:07:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 02:07:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-09-25 02:07:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 02:07:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-09-25 02:07:34,974 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 33 [2020-09-25 02:07:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:34,974 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-09-25 02:07:34,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:07:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-09-25 02:07:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 02:07:34,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:34,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:34,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:34,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash 144032108, now seen corresponding path program 1 times [2020-09-25 02:07:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:34,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515012622] [2020-09-25 02:07:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:07:35,020 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:07:35,020 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:07:35,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:35,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:07:35 BoogieIcfgContainer [2020-09-25 02:07:35,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:07:35,051 INFO L168 Benchmark]: Toolchain (without parser) took 2733.80 ms. Allocated memory was 147.8 MB in the beginning and 235.4 MB in the end (delta: 87.6 MB). Free memory was 102.8 MB in the beginning and 158.3 MB in the end (delta: -55.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:35,053 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 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. [2020-09-25 02:07:35,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.87 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 172.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:35,055 INFO L168 Benchmark]: Boogie Preprocessor took 96.94 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 169.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:35,056 INFO L168 Benchmark]: RCFGBuilder took 737.88 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 116.7 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:35,057 INFO L168 Benchmark]: TraceAbstraction took 1190.55 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 116.1 MB in the beginning and 158.3 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:07:35,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 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 695.87 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 172.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.94 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 169.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.88 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 116.7 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1190.55 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 116.1 MB in the beginning and 158.3 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1052]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L989] SLL* head = malloc(sizeof(SLL)); [L990] head->next = ((void*)0) [L991] head->prev = ((void*)0) [L992] head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] x = malloc(sizeof(SLL)) [L1010] x->data = 1 [L1011] x->next = head [L1012] x->prev = ((void*)0) [L1013] head = x [L1039] x = head [L1042] EXPR x->data [L1042] COND FALSE !(x->data != 1) [L1048] EXPR x->next [L1048] x = x->next [L1049] COND TRUE \read(*x) [L1051] EXPR x->data [L1051] COND TRUE x->data != 1 [L1052] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 98 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=98occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1312 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...