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_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:02:51,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:02:51,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:02:51,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:02:51,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:02:51,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:02:51,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:02:51,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:02:51,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:02:51,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:02:51,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:02:51,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:02:51,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:02:51,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:02:51,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:02:51,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:02:51,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:02:51,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:02:51,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:02:51,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:02:51,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:02:51,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:02:51,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:02:51,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:02:51,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:02:51,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:02:51,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:02:51,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:02:51,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:02:51,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:02:51,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:02:51,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:02:51,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:02:51,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:02:51,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:02:51,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:02:51,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:02:51,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:02:51,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:02:51,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:02:51,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:02:51,530 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 [2019-09-20 13:02:51,552 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:02:51,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:02:51,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:02:51,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:02:51,555 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:02:51,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:02:51,556 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:02:51,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:02:51,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:02:51,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:02:51,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:02:51,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:02:51,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:02:51,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:02:51,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:02:51,559 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:02:51,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:02:51,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:02:51,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:02:51,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:02:51,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:02:51,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:02:51,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:02:51,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:02:51,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:02:51,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:02:51,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:02:51,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:02:51,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:02:51,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:02:51,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:02:51,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:02:51,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:02:51,640 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:02:51,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-09-20 13:02:51,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1879db0b3/b4fd157714e84ae68a49b15158ae9ef2/FLAG0e6447294 [2019-09-20 13:02:52,306 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:02:52,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-09-20 13:02:52,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1879db0b3/b4fd157714e84ae68a49b15158ae9ef2/FLAG0e6447294 [2019-09-20 13:02:52,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1879db0b3/b4fd157714e84ae68a49b15158ae9ef2 [2019-09-20 13:02:52,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:02:52,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:02:52,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:52,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:02:52,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:02:52,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:52" (1/1) ... [2019-09-20 13:02:52,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a2888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:52, skipping insertion in model container [2019-09-20 13:02:52,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:52" (1/1) ... [2019-09-20 13:02:52,663 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:02:52,724 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:02:53,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:53,192 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:02:53,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:53,309 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:02:53,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53 WrapperNode [2019-09-20 13:02:53,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:53,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:02:53,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:02:53,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:02:53,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (1/1) ... [2019-09-20 13:02:53,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:02:53,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:02:53,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:02:53,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:02:53,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (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 [2019-09-20 13:02:53,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:02:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:02:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:02:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:02:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:02:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:02:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-20 13:02:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-20 13:02:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-09-20 13:02:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:02:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:02:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:02:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:02:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:02:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:02:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:02:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:02:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:02:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:02:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:02:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:02:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:02:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:02:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:02:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:02:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:02:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:02:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:02:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:02:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:02:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:02:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:02:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:02:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:02:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:02:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:02:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:02:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:02:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:02:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:02:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:02:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:02:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:02:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:02:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:02:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:02:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:02:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:02:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:02:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:02:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:02:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:02:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:02:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:02:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:02:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:02:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:02:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:02:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:02:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:02:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:02:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:02:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:02:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:02:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:02:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-20 13:02:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-20 13:02:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:02:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:02:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:02:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:02:53,884 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:02:54,067 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:02:54,067 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:02:54,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:54 BoogieIcfgContainer [2019-09-20 13:02:54,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:02:54,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:02:54,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:02:54,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:02:54,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:02:52" (1/3) ... [2019-09-20 13:02:54,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509730df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:54, skipping insertion in model container [2019-09-20 13:02:54,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:53" (2/3) ... [2019-09-20 13:02:54,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509730df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:54, skipping insertion in model container [2019-09-20 13:02:54,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:54" (3/3) ... [2019-09-20 13:02:54,084 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2019-09-20 13:02:54,095 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:02:54,106 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:02:54,123 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:02:54,161 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:02:54,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:02:54,162 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:02:54,162 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:02:54,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:02:54,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:02:54,162 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:02:54,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:02:54,163 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:02:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-09-20 13:02:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-20 13:02:54,191 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:54,192 INFO L407 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] [2019-09-20 13:02:54,194 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash 266861268, now seen corresponding path program 1 times [2019-09-20 13:02:54,200 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:54,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:54,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:54,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:54,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:54,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:02:54,387 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:02:54,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:02:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:54,401 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-09-20 13:02:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:54,426 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2019-09-20 13:02:54,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:02:54,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-09-20 13:02:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:54,437 INFO L225 Difference]: With dead ends: 82 [2019-09-20 13:02:54,438 INFO L226 Difference]: Without dead ends: 34 [2019-09-20 13:02:54,441 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-20 13:02:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-20 13:02:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-20 13:02:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-09-20 13:02:54,485 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2019-09-20 13:02:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:54,486 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-09-20 13:02:54,486 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:02:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-09-20 13:02:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-20 13:02:54,488 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:54,489 INFO L407 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] [2019-09-20 13:02:54,489 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1567298356, now seen corresponding path program 1 times [2019-09-20 13:02:54,490 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:54,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:54,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:54,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:54,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:54,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:02:54,631 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:02:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:02:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:02:54,633 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2019-09-20 13:02:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:54,685 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2019-09-20 13:02:54,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:02:54,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-09-20 13:02:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:54,687 INFO L225 Difference]: With dead ends: 60 [2019-09-20 13:02:54,687 INFO L226 Difference]: Without dead ends: 38 [2019-09-20 13:02:54,688 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-20 13:02:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-09-20 13:02:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-20 13:02:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-09-20 13:02:54,702 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2019-09-20 13:02:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:54,702 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-09-20 13:02:54,702 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:02:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-09-20 13:02:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:02:54,704 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:54,706 INFO L407 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] [2019-09-20 13:02:54,706 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:54,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1679873603, now seen corresponding path program 1 times [2019-09-20 13:02:54,707 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:54,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:54,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:02:54,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:54,888 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:54,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:55,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:02:55,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:55,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:02:55,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-20 13:02:55,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:02:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:02:55,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:55,115 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2019-09-20 13:02:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:55,187 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2019-09-20 13:02:55,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:02:55,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-09-20 13:02:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:55,189 INFO L225 Difference]: With dead ends: 64 [2019-09-20 13:02:55,189 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:02:55,190 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:02:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:02:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-09-20 13:02:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:02:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-09-20 13:02:55,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 36 [2019-09-20 13:02:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:55,203 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-09-20 13:02:55,204 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:02:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-09-20 13:02:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-20 13:02:55,206 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:55,206 INFO L407 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] [2019-09-20 13:02:55,206 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1518605332, now seen corresponding path program 2 times [2019-09-20 13:02:55,207 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:55,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:55,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:55,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:55,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:02:55,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:55,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:02:55,569 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:02:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:02:55,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:02:55,570 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2019-09-20 13:02:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:55,872 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-09-20 13:02:55,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:02:55,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-09-20 13:02:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:55,874 INFO L225 Difference]: With dead ends: 41 [2019-09-20 13:02:55,875 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:02:55,877 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:02:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:02:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-20 13:02:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:02:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-09-20 13:02:55,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 45 [2019-09-20 13:02:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:55,895 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-09-20 13:02:55,895 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:02:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-09-20 13:02:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:02:55,900 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:55,900 INFO L407 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] [2019-09-20 13:02:55,900 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:55,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:55,901 INFO L82 PathProgramCache]: Analyzing trace with hash 909201437, now seen corresponding path program 1 times [2019-09-20 13:02:55,901 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:55,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:55,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:55,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:02:55,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:02:56,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:56,486 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:56,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:56,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 51 conjunts are in the unsatisfiable core [2019-09-20 13:02:56,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:56,797 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 [2019-09-20 13:02:56,797 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:56,804 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:56,804 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:56,805 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-20 13:03:00,968 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 20 [2019-09-20 13:03:04,592 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-20 13:03:04,609 INFO L392 ElimStorePlain]: Different costs {4=[|v_#memory_$Pointer$.offset_25|], 10=[|v_#memory_$Pointer$.base_26|]} [2019-09-20 13:03:04,645 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,646 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 47 [2019-09-20 13:03:04,647 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,678 INFO L567 ElimStorePlain]: treesize reduction 20, result has 78.3 percent of original size [2019-09-20 13:03:04,686 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:04,706 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,709 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:04,709 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:104, output treesize:95 [2019-09-20 13:03:06,721 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (sll_prepend_~new_head~1.base Int) (v_DerPreprocessor_1 Int)) (and (<= (+ |c_#StackHeapBarrier| 1) sll_prepend_~new_head~1.base) (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| sll_prepend_~new_head~1.base (let ((.cse1 (store (store (select |c_old(#memory_$Pointer$.base)| sll_prepend_~new_head~1.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset v_DerPreprocessor_1))) (store .cse1 (+ (select (select |c_#memory_$Pointer$.offset| |c_sll_prepend_#in~head.base|) |c_sll_prepend_#in~head.offset|) 4) (select (select (store |c_old(#memory_$Pointer$.base)| sll_prepend_~new_head~1.base .cse1) |c_sll_prepend_#in~head.base|) |c_sll_prepend_#in~head.offset|)))))) (store .cse0 |c_sll_prepend_#in~head.base| (store (select .cse0 |c_sll_prepend_#in~head.base|) |c_sll_prepend_#in~head.offset| sll_prepend_~new_head~1.base)))))) is different from true [2019-09-20 13:03:06,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:06,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:06,828 INFO L341 Elim1Store]: treesize reduction 32, result has 71.2 percent of original size [2019-09-20 13:03:06,829 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 103 [2019-09-20 13:03:06,831 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,890 INFO L567 ElimStorePlain]: treesize reduction 60, result has 53.1 percent of original size [2019-09-20 13:03:06,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:06,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:06,896 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:106, output treesize:31 [2019-09-20 13:03:06,978 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 26 treesize of output 18 [2019-09-20 13:03:06,979 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,987 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:06,991 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:31 [2019-09-20 13:03:07,096 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:07,097 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2019-09-20 13:03:07,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:07,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:07,101 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:07,115 INFO L567 ElimStorePlain]: treesize reduction 14, result has 41.7 percent of original size [2019-09-20 13:03:07,116 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:07,116 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:4 [2019-09-20 13:03:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:03:07,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:07,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 29 [2019-09-20 13:03:07,137 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-20 13:03:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-20 13:03:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=688, Unknown=3, NotChecked=52, Total=812 [2019-09-20 13:03:07,138 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 29 states. [2019-09-20 13:03:16,288 WARN L191 SmtUtils]: Spent 8.88 s on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-09-20 13:03:20,660 WARN L191 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2019-09-20 13:03:24,805 WARN L191 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2019-09-20 13:03:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:25,135 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-09-20 13:03:25,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:03:25,135 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 47 [2019-09-20 13:03:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:25,137 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:03:25,137 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:03:25,138 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=124, Invalid=1283, Unknown=3, NotChecked=72, Total=1482 [2019-09-20 13:03:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:03:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-09-20 13:03:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:03:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-20 13:03:25,145 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 47 [2019-09-20 13:03:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:25,145 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-20 13:03:25,145 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-20 13:03:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-20 13:03:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:03:25,147 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:25,147 INFO L407 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] [2019-09-20 13:03:25,147 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:25,148 INFO L82 PathProgramCache]: Analyzing trace with hash 909203111, now seen corresponding path program 1 times [2019-09-20 13:03:25,148 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:25,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:25,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:25,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:25,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:26,424 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-09-20 13:03:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:03:26,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:26,627 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:26,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:26,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 105 conjunts are in the unsatisfiable core [2019-09-20 13:03:26,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:26,847 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-09-20 13:03:26,847 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,854 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:26,854 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,855 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-09-20 13:03:26,865 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:03:26,866 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,873 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:26,874 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,874 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-20 13:03:26,893 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-09-20 13:03:26,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,903 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:26,903 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:26,904 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2019-09-20 13:03:27,089 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 3 [2019-09-20 13:03:27,090 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:27,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:27,117 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 15 treesize of output 7 [2019-09-20 13:03:27,118 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:27,137 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:27,143 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 21 treesize of output 13 [2019-09-20 13:03:27,144 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:27,163 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:27,169 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 7 treesize of output 3 [2019-09-20 13:03:27,169 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:27,184 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:27,185 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:27,185 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:59, output treesize:13 [2019-09-20 13:03:27,341 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:27,362 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:27,363 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:27,364 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:65 [2019-09-20 13:03:31,479 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 40 [2019-09-20 13:03:35,652 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 46 [2019-09-20 13:03:35,663 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_int_25|], 10=[|v_#memory_$Pointer$.base_28|, |v_#memory_$Pointer$.offset_27|]} [2019-09-20 13:03:35,670 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:35,747 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:35,752 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:35,809 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:35,814 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:35,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:35,858 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 3 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:35,858 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:169, output treesize:222