/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:16,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:16,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:16,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:16,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:16,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:16,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:16,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:16,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:16,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:16,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:16,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:16,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:16,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:16,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:16,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:16,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:16,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:16,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:16,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:16,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:16,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:16,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:16,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:16,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:16,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:16,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:16,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:16,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:16,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:16,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:16,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:16,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:16,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:16,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:16,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:16,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:16,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:16,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:16,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:16,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:16,180 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 [2020-09-21 12:27:16,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:16,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:16,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:16,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:16,227 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:16,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:16,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:16,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:16,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:16,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:16,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:16,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:16,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:16,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:16,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:16,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:16,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:16,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:16,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:16,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:16,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:16,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:16,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:16,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:16,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:16,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:16,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:16,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:16,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:16,233 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:16,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:16,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:16,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:16,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:16,761 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:16,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-21 12:27:16,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf7c3445/cf031272ca5846fdb44417890fc573c1/FLAG065d48bb0 [2020-09-21 12:27:17,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:17,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-21 12:27:17,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf7c3445/cf031272ca5846fdb44417890fc573c1/FLAG065d48bb0 [2020-09-21 12:27:17,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf7c3445/cf031272ca5846fdb44417890fc573c1 [2020-09-21 12:27:17,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:17,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:17,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:17,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:17,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:17,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:17" (1/1) ... [2020-09-21 12:27:17,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebb600b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:17, skipping insertion in model container [2020-09-21 12:27:17,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:17" (1/1) ... [2020-09-21 12:27:17,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:17,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:18,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:18,337 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:18,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:18,448 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:18,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18 WrapperNode [2020-09-21 12:27:18,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:18,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:18,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:18,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:18,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:18,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:18,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:18,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:18,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (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 [2020-09-21 12:27:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:27:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:27:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:27:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:27:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:27:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:27:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:27:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:27:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:27:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:27:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:27:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:27:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:27:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:27:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:27:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:27:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:27:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:27:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:27:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:27:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:27:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:27:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:27:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:27:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:27:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:27:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:27:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:27:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:27:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:27:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:27:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:27:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:27:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:27:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:27:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:27:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:27:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:27:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:27:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:27:18,622 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:27:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:27:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:27:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:19,193 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:19,193 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-21 12:27:19,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:19 BoogieIcfgContainer [2020-09-21 12:27:19,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:19,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:19,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:19,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:19,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:17" (1/3) ... [2020-09-21 12:27:19,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cd1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:19, skipping insertion in model container [2020-09-21 12:27:19,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (2/3) ... [2020-09-21 12:27:19,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cd1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:19, skipping insertion in model container [2020-09-21 12:27:19,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:19" (3/3) ... [2020-09-21 12:27:19,211 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-09-21 12:27:19,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:19,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-21 12:27:19,256 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-21 12:27:19,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:19,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:19,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:19,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:19,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:19,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:19,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:19,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-21 12:27:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:27:19,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:19,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:19,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:19,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-09-21 12:27:19,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:19,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162561356] [2020-09-21 12:27:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:19,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:27:19,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-21 12:27:19,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:27:19,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:19,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:20,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162561356] [2020-09-21 12:27:20,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:20,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:27:20,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284273357] [2020-09-21 12:27:20,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:27:20,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:20,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:27:20,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:27:20,038 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-09-21 12:27:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:20,213 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2020-09-21 12:27:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:27:20,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-21 12:27:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:20,235 INFO L225 Difference]: With dead ends: 70 [2020-09-21 12:27:20,235 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:27:20,241 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 [2020-09-21 12:27:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:27:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:27:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:27:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-09-21 12:27:20,306 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2020-09-21 12:27:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:20,306 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-09-21 12:27:20,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:27:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-09-21 12:27:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 12:27:20,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:20,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:20,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:20,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1199756337, now seen corresponding path program 1 times [2020-09-21 12:27:20,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:20,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805502846] [2020-09-21 12:27:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:27:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-21 12:27:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:27:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:27:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:27:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:20,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805502846] [2020-09-21 12:27:20,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:20,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:20,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009927926] [2020-09-21 12:27:20,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:20,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:20,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:20,761 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-09-21 12:27:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:20,926 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-09-21 12:27:20,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:20,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-21 12:27:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:20,928 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:27:20,928 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:27:20,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:27:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-09-21 12:27:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:27:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-09-21 12:27:20,946 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2020-09-21 12:27:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:20,947 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-09-21 12:27:20,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-09-21 12:27:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:27:20,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:20,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:20,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:20,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-09-21 12:27:20,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:20,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683431886] [2020-09-21 12:27:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:27:21,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-21 12:27:21,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:27:21,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:21,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:21,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683431886] [2020-09-21 12:27:21,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:21,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:21,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231534376] [2020-09-21 12:27:21,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:21,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:21,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:21,277 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2020-09-21 12:27:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:21,374 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-09-21 12:27:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:21,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 12:27:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:21,378 INFO L225 Difference]: With dead ends: 75 [2020-09-21 12:27:21,378 INFO L226 Difference]: Without dead ends: 53 [2020-09-21 12:27:21,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-21 12:27:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-09-21 12:27:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:27:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-21 12:27:21,389 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2020-09-21 12:27:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:21,389 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-21 12:27:21,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-21 12:27:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 12:27:21,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:21,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:21,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:21,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:21,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-09-21 12:27:21,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:21,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006160370] [2020-09-21 12:27:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:27:21,416 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:27:21,416 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:27:21,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:21,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:27:21 BoogieIcfgContainer [2020-09-21 12:27:21,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:27:21,448 INFO L168 Benchmark]: Toolchain (without parser) took 3692.80 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 100.7 MB in the beginning and 107.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,449 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.79 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,451 INFO L168 Benchmark]: Boogie Preprocessor took 74.54 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 167.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,451 INFO L168 Benchmark]: RCFGBuilder took 673.61 ms. Allocated memory is still 202.9 MB. Free memory was 167.2 MB in the beginning and 123.2 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,453 INFO L168 Benchmark]: TraceAbstraction took 2244.44 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 122.5 MB in the beginning and 107.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:21,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.79 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.54 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 167.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.61 ms. Allocated memory is still 202.9 MB. Free memory was 167.2 MB in the beginning and 123.2 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2244.44 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 122.5 MB in the beginning and 107.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: 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 = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 44 SDslu, 66 SDs, 0 SdLazy, 140 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, 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, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...