/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:18:36,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:18:36,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:18:36,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:18:36,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:18:36,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:18:36,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:18:36,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:18:36,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:18:36,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:18:36,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:18:36,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:18:36,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:18:36,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:18:36,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:18:36,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:18:36,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:18:36,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:18:36,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:18:36,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:18:36,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:18:36,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:18:36,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:18:36,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:18:36,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:18:36,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:18:36,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:18:36,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:18:36,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:18:36,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:18:36,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:18:36,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:18:36,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:18:36,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:18:36,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:18:36,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:18:36,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:18:36,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:18:36,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:18:36,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:18:36,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:18:36,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:18:36,588 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:18:36,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:18:36,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:18:36,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:18:36,590 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:18:36,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:18:36,591 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:18:36,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:18:36,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:18:36,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:18:36,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:18:36,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:18:36,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:18:36,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:18:36,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:18:36,594 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:18:36,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:18:36,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:18:36,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:18:36,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:18:36,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:18:36,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:18:36,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:18:36,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:18:36,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:18:36,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:18:36,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:18:36,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:18:36,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:18:36,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:18:36,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:18:36,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:18:36,896 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:18:36,897 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:18:36,897 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-11-06 21:18:36,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e8b8985/6cfcaa227cce49999ce10bbfe6c03f28/FLAG8c7bcea98 [2019-11-06 21:18:37,523 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:18:37,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-11-06 21:18:37,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e8b8985/6cfcaa227cce49999ce10bbfe6c03f28/FLAG8c7bcea98 [2019-11-06 21:18:37,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e8b8985/6cfcaa227cce49999ce10bbfe6c03f28 [2019-11-06 21:18:37,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:18:37,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:18:37,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:37,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:18:37,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:18:37,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:37" (1/1) ... [2019-11-06 21:18:37,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3245a9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:37, skipping insertion in model container [2019-11-06 21:18:37,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:37" (1/1) ... [2019-11-06 21:18:37,890 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:18:37,942 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:18:38,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:38,351 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:18:38,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:38,466 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:18:38,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38 WrapperNode [2019-11-06 21:18:38,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:38,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:18:38,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:18:38,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:18:38,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... [2019-11-06 21:18:38,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:18:38,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:18:38,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:18:38,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:18:38,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 21:18:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:18:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:18:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:18:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:18:38,603 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:18:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:18:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-06 21:18:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-06 21:18:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-11-06 21:18:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:18:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:18:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:18:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:18:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:18:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:18:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:18:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:18:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:18:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:18:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:18:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:18:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:18:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:18:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:18:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:18:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:18:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:18:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:18:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:18:38,936 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:18:39,258 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:18:39,259 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 21:18:39,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:39 BoogieIcfgContainer [2019-11-06 21:18:39,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:18:39,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:18:39,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:18:39,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:18:39,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:37" (1/3) ... [2019-11-06 21:18:39,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225e8541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:39, skipping insertion in model container [2019-11-06 21:18:39,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:38" (2/3) ... [2019-11-06 21:18:39,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225e8541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:39, skipping insertion in model container [2019-11-06 21:18:39,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:39" (3/3) ... [2019-11-06 21:18:39,288 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2019-11-06 21:18:39,300 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:18:39,312 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:18:39,323 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:18:39,345 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:18:39,346 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:18:39,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:18:39,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:18:39,346 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:18:39,346 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:18:39,347 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:18:39,347 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:18:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-11-06 21:18:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:18:39,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:39,376 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:39,381 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:39,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1433043619, now seen corresponding path program 1 times [2019-11-06 21:18:39,396 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:39,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074403343] [2019-11-06 21:18:39,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:39,723 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074403343] [2019-11-06 21:18:39,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:39,725 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:18:39,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778559241] [2019-11-06 21:18:39,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:18:39,734 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:18:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:18:39,748 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-11-06 21:18:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:40,025 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2019-11-06 21:18:40,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:18:40,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-06 21:18:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:40,039 INFO L225 Difference]: With dead ends: 104 [2019-11-06 21:18:40,039 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 21:18:40,043 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:18:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 21:18:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-11-06 21:18:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:18:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-11-06 21:18:40,097 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 29 [2019-11-06 21:18:40,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:40,098 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-11-06 21:18:40,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:18:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-11-06 21:18:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:18:40,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:40,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:40,101 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash -257763685, now seen corresponding path program 1 times [2019-11-06 21:18:40,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:40,102 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733488556] [2019-11-06 21:18:40,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:40,360 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733488556] [2019-11-06 21:18:40,360 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:40,360 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:18:40,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314859607] [2019-11-06 21:18:40,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:18:40,366 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:18:40,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:18:40,367 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2019-11-06 21:18:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:40,628 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2019-11-06 21:18:40,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:18:40,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-06 21:18:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:40,630 INFO L225 Difference]: With dead ends: 74 [2019-11-06 21:18:40,630 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 21:18:40,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:18:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 21:18:40,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-11-06 21:18:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:18:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-11-06 21:18:40,641 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 29 [2019-11-06 21:18:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:40,642 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-11-06 21:18:40,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:18:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-11-06 21:18:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 21:18:40,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:40,643 INFO L410 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] [2019-11-06 21:18:40,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash 58818396, now seen corresponding path program 1 times [2019-11-06 21:18:40,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:40,645 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972239337] [2019-11-06 21:18:40,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:40,834 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972239337] [2019-11-06 21:18:40,835 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596660616] [2019-11-06 21:18:40,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:18:41,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:41,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:41,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-06 21:18:41,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753886665] [2019-11-06 21:18:41,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:18:41,124 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:41,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:18:41,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:18:41,125 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2019-11-06 21:18:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:41,383 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2019-11-06 21:18:41,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:18:41,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-06 21:18:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:41,388 INFO L225 Difference]: With dead ends: 78 [2019-11-06 21:18:41,388 INFO L226 Difference]: Without dead ends: 49 [2019-11-06 21:18:41,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:18:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-06 21:18:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-11-06 21:18:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 21:18:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2019-11-06 21:18:41,408 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 38 [2019-11-06 21:18:41,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:41,408 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2019-11-06 21:18:41,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:18:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2019-11-06 21:18:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 21:18:41,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:41,412 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-11-06 21:18:41,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:41,614 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:41,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1476517957, now seen corresponding path program 2 times [2019-11-06 21:18:41,615 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:41,615 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869896174] [2019-11-06 21:18:41,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:42,119 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869896174] [2019-11-06 21:18:42,119 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150165756] [2019-11-06 21:18:42,119 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:42,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:18:42,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:18:42,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-06 21:18:42,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:42,458 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-06 21:18:42,459 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:42,468 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:42,468 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:42,469 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-06 21:18:44,540 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true