/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/sll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:21,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:21,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:21,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:21,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:21,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:21,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:21,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:21,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:21,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:21,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:21,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:21,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:21,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:21,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:21,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:21,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:21,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:21,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:21,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:21,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:21,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:21,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:21,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:21,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:21,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:21,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:21,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:21,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:21,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:21,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:21,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:21,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:21,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:21,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:21,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:21,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:21,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:21,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:21,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:21,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:21,677 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 10:05:21,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:21,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:21,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:21,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:21,727 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:21,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:21,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:21,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:21,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:21,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:21,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:21,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:21,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:21,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:21,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:21,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:21,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:21,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:21,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:21,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:21,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:21,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:21,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:21,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:21,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:21,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:21,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:21,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:21,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:21,735 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 10:05:22,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:22,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:22,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:22,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:22,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:22,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-09-25 10:05:22,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05cb3579d/5d3f60d7c7444dae9875889ca9a68d54/FLAG84f194cb6 [2020-09-25 10:05:22,961 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:22,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-09-25 10:05:22,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05cb3579d/5d3f60d7c7444dae9875889ca9a68d54/FLAG84f194cb6 [2020-09-25 10:05:23,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05cb3579d/5d3f60d7c7444dae9875889ca9a68d54 [2020-09-25 10:05:23,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:23,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:23,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:23,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:23,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:23,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:23" (1/1) ... [2020-09-25 10:05:23,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df4749d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:23" (1/1) ... [2020-09-25 10:05:23,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:23,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:23,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:23,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:23,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:24,030 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24 WrapperNode [2020-09-25 10:05:24,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:24,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:24,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:24,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:24,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (1/1) ... [2020-09-25 10:05:24,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:24,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:24,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:24,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:24,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (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 10:05:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:24,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:24,804 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 10:05:24,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:24 BoogieIcfgContainer [2020-09-25 10:05:24,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:24,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:24,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:24,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:24,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:23" (1/3) ... [2020-09-25 10:05:24,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115dca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:24, skipping insertion in model container [2020-09-25 10:05:24,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:24" (2/3) ... [2020-09-25 10:05:24,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115dca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:24, skipping insertion in model container [2020-09-25 10:05:24,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:24" (3/3) ... [2020-09-25 10:05:24,830 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-09-25 10:05:24,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:24,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:24,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:24,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:24,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:24,918 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:24,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:24,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:24,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:24,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:24,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-09-25 10:05:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 10:05:24,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:24,981 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] [2020-09-25 10:05:24,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1919098423, now seen corresponding path program 1 times [2020-09-25 10:05:25,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:25,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155614090] [2020-09-25 10:05:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:25,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:05:25,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 10:05:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:25,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 10:05:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:05:25,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:25,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:05:25,586 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 10:05:25,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155614090] [2020-09-25 10:05:25,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:25,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:05:25,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884940641] [2020-09-25 10:05:25,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:05:25,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:05:25,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:05:25,622 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-09-25 10:05:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:25,881 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-09-25 10:05:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:05:25,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-25 10:05:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:25,900 INFO L225 Difference]: With dead ends: 135 [2020-09-25 10:05:25,900 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 10:05:25,905 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 10:05:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 10:05:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-25 10:05:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 10:05:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-09-25 10:05:25,965 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 30 [2020-09-25 10:05:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:25,965 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-09-25 10:05:25,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:05:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-09-25 10:05:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:05:25,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:25,968 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] [2020-09-25 10:05:25,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:25,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash -493967776, now seen corresponding path program 1 times [2020-09-25 10:05:25,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:25,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259741976] [2020-09-25 10:05:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:05:26,001 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:05:26,001 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:05:26,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:26,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:05:26 BoogieIcfgContainer [2020-09-25 10:05:26,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:05:26,032 INFO L168 Benchmark]: Toolchain (without parser) took 2795.87 ms. Allocated memory was 147.8 MB in the beginning and 234.9 MB in the end (delta: 87.0 MB). Free memory was 102.1 MB in the beginning and 165.3 MB in the end (delta: -63.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:26,033 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:05:26,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.67 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 170.9 MB in the end (delta: -69.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:26,035 INFO L168 Benchmark]: Boogie Preprocessor took 72.11 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 167.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:26,036 INFO L168 Benchmark]: RCFGBuilder took 706.45 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 116.6 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:26,037 INFO L168 Benchmark]: TraceAbstraction took 1214.50 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 116.0 MB in the beginning and 165.3 MB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:05:26,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 793.67 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 170.9 MB in the end (delta: -69.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.11 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 167.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 706.45 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 116.6 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1214.50 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 116.0 MB in the beginning and 165.3 MB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND FALSE !(__VERIFIER_nondet_int()) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 1 [L987] head->opt = head [L988] SLL* x = head; [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head [L994] COND TRUE x != ((void*)0) [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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=96occurred 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, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 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...