/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:05:07,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:05:07,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:05:07,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:05:07,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:05:07,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:05:07,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:05:07,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:05:07,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:05:07,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:05:07,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:05:07,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:05:07,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:05:07,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:05:07,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:05:07,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:05:07,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:05:07,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:05:07,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:05:07,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:05:07,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:05:07,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:05:07,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:05:07,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:05:07,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:05:07,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:05:07,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:05:07,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:05:07,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:05:07,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:05:07,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:05:07,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:05:07,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:05:07,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:05:07,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:05:07,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:05:07,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:05:07,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:05:07,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:05:07,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:05:07,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:05:07,428 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 [2020-10-27 20:05:07,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:05:07,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:05:07,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:05:07,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:05:07,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:05:07,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:05:07,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:05:07,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:05:07,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:05:07,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:05:07,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:05:07,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:05:07,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:05:07,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:05:07,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:05:07,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:05:07,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:05:07,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:05:07,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:05:07,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:05:07,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:05:07,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:05:07,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:05:07,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:05:07,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:05:07,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:05:07,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:05:07,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:05:07,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:05:07,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:05:07,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:05:07,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:05:07,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:05:07,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:05:07,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:05:07,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-27 20:05:07,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d51b3fe/74610f6baa2645ae977847a33dc40950/FLAG20fb6ca23 [2020-10-27 20:05:08,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:05:08,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-27 20:05:08,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d51b3fe/74610f6baa2645ae977847a33dc40950/FLAG20fb6ca23 [2020-10-27 20:05:09,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71d51b3fe/74610f6baa2645ae977847a33dc40950 [2020-10-27 20:05:09,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:05:09,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:05:09,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:05:09,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:05:09,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:05:09,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cae07a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09, skipping insertion in model container [2020-10-27 20:05:09,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:05:09,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:05:09,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:05:09,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:05:09,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:05:09,668 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:05:09,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09 WrapperNode [2020-10-27 20:05:09,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:05:09,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:05:09,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:05:09,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:05:09,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (1/1) ... [2020-10-27 20:05:09,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:05:09,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:05:09,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:05:09,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:05:09,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (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 [2020-10-27 20:05:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:05:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:05:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-27 20:05:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-27 20:05:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:05:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:05:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:05:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:05:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:05:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 20:05:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 20:05:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 20:05:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 20:05:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 20:05:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 20:05:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 20:05:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:05:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 20:05:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 20:05:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 20:05:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 20:05:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 20:05:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 20:05:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 20:05:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:05:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:05:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:05:10,292 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 20:05:10,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:05:10,567 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 20:05:10,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:05:10 BoogieIcfgContainer [2020-10-27 20:05:10,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:05:10,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:05:10,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:05:10,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:05:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:05:09" (1/3) ... [2020-10-27 20:05:10,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bc6b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:05:10, skipping insertion in model container [2020-10-27 20:05:10,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:05:09" (2/3) ... [2020-10-27 20:05:10,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bc6b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:05:10, skipping insertion in model container [2020-10-27 20:05:10,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:05:10" (3/3) ... [2020-10-27 20:05:10,577 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2020-10-27 20:05:10,589 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:05:10,594 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:05:10,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:05:10,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:05:10,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:05:10,635 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:05:10,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:05:10,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:05:10,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:05:10,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:05:10,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:05:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-27 20:05:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 20:05:10,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:05:10,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:05:10,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:05:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:05:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1102594133, now seen corresponding path program 1 times [2020-10-27 20:05:10,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:05:10,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004005067] [2020-10-27 20:05:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:05:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 20:05:15,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:05:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4199 [2020-10-27 20:05:15,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:05:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:05:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:05:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:05:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:05:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:05:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:05:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:05:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:05:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:05:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:05:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:05:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:05:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:05:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:05:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:05:15,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:05:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:05:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:05:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:15,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:05:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:05:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:05:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:05:15,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004005067] [2020-10-27 20:05:15,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:05:15,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:05:15,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374738632] [2020-10-27 20:05:15,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:05:15,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:05:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:05:15,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:05:15,276 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2020-10-27 20:05:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:05:15,508 INFO L93 Difference]: Finished difference Result 114 states and 151 transitions. [2020-10-27 20:05:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:05:15,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-27 20:05:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:05:15,519 INFO L225 Difference]: With dead ends: 114 [2020-10-27 20:05:15,519 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:05:15,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:05:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:05:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 20:05:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 20:05:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-27 20:05:15,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 39 [2020-10-27 20:05:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:05:15,573 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-27 20:05:15,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:05:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-27 20:05:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 20:05:15,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:05:15,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:05:15,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:05:15,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:05:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:05:15,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1963960124, now seen corresponding path program 1 times [2020-10-27 20:05:15,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:05:15,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410649897] [2020-10-27 20:05:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:05:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:05:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:05:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:05:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-27 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:05:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:05:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:05:18,561 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-10-27 20:05:18,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:05:18,563 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-27 20:05:18,569 INFO L168 Benchmark]: Toolchain (without parser) took 9531.49 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.6 MB in the beginning and 152.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 151.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:05:18,570 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.4 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:05:18,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 102.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:05:18,572 INFO L168 Benchmark]: Boogie Preprocessor took 118.34 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 134.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:05:18,572 INFO L168 Benchmark]: RCFGBuilder took 780.03 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 127.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:05:18,573 INFO L168 Benchmark]: TraceAbstraction took 7995.77 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 127.8 MB in the beginning and 152.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 150.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:05:18,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.4 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 621.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 102.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 118.34 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 134.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 780.03 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 127.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7995.77 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 127.8 MB in the beginning and 152.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 150.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...