/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:38:12,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:38:12,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:38:12,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:38:12,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:38:12,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:38:12,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:38:12,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:38:12,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:38:12,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:38:12,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:38:12,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:38:12,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:38:12,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:38:12,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:38:12,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:38:12,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:38:12,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:38:12,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:38:12,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:38:12,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:38:12,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:38:12,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:38:12,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:38:12,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:38:12,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:38:12,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:38:12,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:38:12,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:38:12,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:38:12,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:38:12,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:38:12,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:38:12,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:38:12,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:38:12,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:38:12,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:38:12,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:38:12,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:38:12,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:38:12,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:38:12,517 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 [2020-10-12 15:38:12,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:38:12,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:38:12,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:38:12,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:38:12,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:38:12,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:38:12,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:38:12,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:38:12,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:38:12,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:38:12,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:38:12,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:38:12,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:38:12,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:38:12,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:38:12,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:38:12,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:38:12,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:38:12,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:38:12,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:38:12,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:38:12,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:12,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:38:12,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:38:12,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:38:12,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:38:12,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:38:12,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:38:12,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:38:12,565 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:38:12,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:38:12,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:38:12,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:38:12,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:38:12,869 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:38:12,870 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-10-12 15:38:12,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090a107a4/022080dc4971445e9d3fe0d4a3626be3/FLAG3dd679edc [2020-10-12 15:38:13,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:38:13,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-10-12 15:38:13,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090a107a4/022080dc4971445e9d3fe0d4a3626be3/FLAG3dd679edc [2020-10-12 15:38:13,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090a107a4/022080dc4971445e9d3fe0d4a3626be3 [2020-10-12 15:38:13,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:38:13,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:38:13,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:13,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:38:13,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:38:13,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:13" (1/1) ... [2020-10-12 15:38:13,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:13, skipping insertion in model container [2020-10-12 15:38:13,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:13" (1/1) ... [2020-10-12 15:38:13,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:38:13,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:38:14,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:14,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:38:14,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:14,384 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:38:14,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14 WrapperNode [2020-10-12 15:38:14,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:14,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:38:14,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:38:14,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:38:14,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:38:14,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:38:14,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:38:14,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:38:14,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (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 [2020-10-12 15:38:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:38:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:38:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:38:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:38:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:38:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:38:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:38:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:38:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:38:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:38:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:38:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:38:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:38:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:38:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:38:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:38:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:38:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:38:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:38:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:38:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:38:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:38:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:38:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:38:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:38:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:38:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:38:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:38:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:38:15,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:38:15,129 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-12 15:38:15,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:15 BoogieIcfgContainer [2020-10-12 15:38:15,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:38:15,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:38:15,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:38:15,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:38:15,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:38:13" (1/3) ... [2020-10-12 15:38:15,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729066cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:15, skipping insertion in model container [2020-10-12 15:38:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14" (2/3) ... [2020-10-12 15:38:15,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729066cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:15, skipping insertion in model container [2020-10-12 15:38:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:15" (3/3) ... [2020-10-12 15:38:15,143 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-10-12 15:38:15,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:38:15,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 15:38:15,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 15:38:15,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:38:15,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:38:15,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:38:15,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:38:15,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:38:15,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:38:15,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:38:15,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:38:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-12 15:38:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:38:15,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:15,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:15,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-10-12 15:38:15,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:15,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511932493] [2020-10-12 15:38:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:38:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-12 15:38:15,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:38:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:38:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:38:15,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:15,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:38:15,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:15,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511932493] [2020-10-12 15:38:15,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:15,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:38:15,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333175608] [2020-10-12 15:38:15,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:38:15,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:38:15,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:38:15,905 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-12 15:38:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:16,089 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-10-12 15:38:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:38:16,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 15:38:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:16,101 INFO L225 Difference]: With dead ends: 122 [2020-10-12 15:38:16,102 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:38:16,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:38:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-12 15:38:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 15:38:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-12 15:38:16,144 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 10 [2020-10-12 15:38:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:16,144 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-12 15:38:16,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:38:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-12 15:38:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:38:16,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:16,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:16,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:38:16,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-10-12 15:38:16,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:16,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347870899] [2020-10-12 15:38:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:38:16,174 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:38:16,175 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:38:16,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:38:16,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:38:16 BoogieIcfgContainer [2020-10-12 15:38:16,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:38:16,199 INFO L168 Benchmark]: Toolchain (without parser) took 2427.57 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 102.8 MB in the beginning and 168.2 MB in the end (delta: -65.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:38:16,200 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:38:16,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.42 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 172.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:38:16,202 INFO L168 Benchmark]: Boogie Preprocessor took 64.55 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 168.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:38:16,203 INFO L168 Benchmark]: RCFGBuilder took 683.52 ms. Allocated memory is still 204.5 MB. Free memory was 168.8 MB in the beginning and 122.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:38:16,204 INFO L168 Benchmark]: TraceAbstraction took 1060.76 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 122.8 MB in the beginning and 168.2 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:38:16,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.42 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 172.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.55 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 168.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.52 ms. Allocated memory is still 204.5 MB. Free memory was 168.8 MB in the beginning and 122.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1060.76 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 122.8 MB in the beginning and 168.2 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 86 SDslu, 45 SDs, 0 SdLazy, 70 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 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...