/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/sll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:18:01,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:18:01,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:18:01,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:18:01,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:18:01,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:18:01,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:18:01,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:18:01,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:18:01,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:18:01,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:18:01,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:18:01,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:18:01,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:18:01,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:18:01,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:18:01,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:18:01,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:18:01,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:18:01,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:18:01,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:18:01,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:18:01,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:18:01,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:18:01,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:18:01,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:18:01,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:18:01,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:18:01,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:18:01,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:18:01,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:18:01,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:18:01,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:18:01,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:18:01,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:18:01,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:18:01,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:18:01,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:18:01,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:18:01,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:18:01,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:18:01,477 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 21:18:01,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:18:01,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:18:01,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:18:01,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:18:01,500 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:18:01,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:18:01,501 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:18:01,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:18:01,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:18:01,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:18:01,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:18:01,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:18:01,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:18:01,503 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:18:01,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:18:01,504 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:18:01,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:18:01,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:18:01,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:18:01,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:18:01,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:18:01,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:18:01,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:18:01,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:18:01,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:18:01,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:18:01,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:18:01,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:18:01,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:18:01,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:18:01,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:18:01,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:18:01,839 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:18:01,839 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:18:01,840 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-11-06 21:18:01,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ac13ac0/49d8cc2dc74045ce9a6b506f52112b69/FLAG4e8a0629c [2019-11-06 21:18:02,469 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:18:02,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-11-06 21:18:02,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ac13ac0/49d8cc2dc74045ce9a6b506f52112b69/FLAG4e8a0629c [2019-11-06 21:18:02,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ac13ac0/49d8cc2dc74045ce9a6b506f52112b69 [2019-11-06 21:18:02,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:18:02,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:18:02,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:02,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:18:02,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:18:02,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:02" (1/1) ... [2019-11-06 21:18:02,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edc095c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:02, skipping insertion in model container [2019-11-06 21:18:02,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:02" (1/1) ... [2019-11-06 21:18:02,833 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:18:02,893 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:18:03,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:03,469 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:18:03,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:03,606 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:18:03,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03 WrapperNode [2019-11-06 21:18:03,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:03,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:18:03,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:18:03,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:18:03,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:18:03,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:18:03,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:18:03,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:18:03,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (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 21:18:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:18:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:18:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:18:03,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:18:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:18:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:18:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-06 21:18:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-06 21:18:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-11-06 21:18:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:18:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:18:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:18:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:18:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:18:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:18:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:18:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:18:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:18:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:18:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:18:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:18:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:18:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:18:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:18:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:18:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:18:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:18:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:18:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:18:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:18:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:18:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:18:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:18:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:18:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:18:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:18:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:18:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:18:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:18:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:18:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:18:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:18:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:18:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:18:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:18:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:18:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:18:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:18:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:18:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:18:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:18:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:18:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:18:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:18:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:18:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:18:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:18:04,142 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:18:04,415 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:18:04,416 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 21:18:04,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:04 BoogieIcfgContainer [2019-11-06 21:18:04,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:18:04,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:18:04,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:18:04,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:18:04,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:02" (1/3) ... [2019-11-06 21:18:04,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20fa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:04, skipping insertion in model container [2019-11-06 21:18:04,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (2/3) ... [2019-11-06 21:18:04,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20fa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:04, skipping insertion in model container [2019-11-06 21:18:04,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:04" (3/3) ... [2019-11-06 21:18:04,425 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2019-11-06 21:18:04,435 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:18:04,443 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:18:04,454 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:18:04,476 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:18:04,476 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:18:04,477 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:18:04,477 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:18:04,477 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:18:04,477 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:18:04,477 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:18:04,477 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:18:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-11-06 21:18:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-06 21:18:04,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:04,503 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] [2019-11-06 21:18:04,504 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:04,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1012713618, now seen corresponding path program 1 times [2019-11-06 21:18:04,520 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:04,521 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795842115] [2019-11-06 21:18:04,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:04,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795842115] [2019-11-06 21:18:04,959 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:04,960 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:18:04,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273084377] [2019-11-06 21:18:04,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:18:04,965 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:04,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:18:04,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:18:04,978 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2019-11-06 21:18:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:05,244 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2019-11-06 21:18:05,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:18:05,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-06 21:18:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:05,256 INFO L225 Difference]: With dead ends: 101 [2019-11-06 21:18:05,256 INFO L226 Difference]: Without dead ends: 40 [2019-11-06 21:18:05,260 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:18:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-06 21:18:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-06 21:18:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-06 21:18:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-11-06 21:18:05,309 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-11-06 21:18:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:05,311 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-06 21:18:05,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:18:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-11-06 21:18:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-06 21:18:05,314 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:05,314 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] [2019-11-06 21:18:05,314 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1012699699, now seen corresponding path program 1 times [2019-11-06 21:18:05,315 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:05,315 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90079430] [2019-11-06 21:18:05,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:05,640 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90079430] [2019-11-06 21:18:05,640 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:05,640 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:18:05,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325632236] [2019-11-06 21:18:05,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:18:05,645 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:18:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:18:05,646 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2019-11-06 21:18:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:05,888 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-11-06 21:18:05,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:18:05,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-06 21:18:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:05,890 INFO L225 Difference]: With dead ends: 70 [2019-11-06 21:18:05,890 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 21:18:05,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:18:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 21:18:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-11-06 21:18:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:18:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-11-06 21:18:05,902 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2019-11-06 21:18:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:05,902 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-06 21:18:05,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:18:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2019-11-06 21:18:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-06 21:18:05,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:05,904 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:05,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1741397995, now seen corresponding path program 1 times [2019-11-06 21:18:05,905 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:05,905 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355546214] [2019-11-06 21:18:05,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:18:06,554 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355546214] [2019-11-06 21:18:06,554 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852188205] [2019-11-06 21:18:06,554 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 21:18:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-06 21:18:06,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:06,969 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 21:18:06,969 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:06,982 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:06,983 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 21:18:06,983 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-06 21:18:08,033 WARN L191 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-06 21:18:09,103 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-06 21:18:09,120 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:09,132 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:09,133 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. [2019-11-06 21:18:09,133 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-11-06 21:18:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:18:16,282 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:16,282 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-11-06 21:18:16,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082759498] [2019-11-06 21:18:16,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-06 21:18:16,284 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:16,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-06 21:18:16,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2019-11-06 21:18:16,286 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 26 states. [2019-11-06 21:18:17,611 WARN L191 SmtUtils]: Spent 947.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-11-06 21:18:21,225 WARN L191 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-06 21:18:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:25,960 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-11-06 21:18:25,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-06 21:18:25,960 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2019-11-06 21:18:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:25,963 INFO L225 Difference]: With dead ends: 53 [2019-11-06 21:18:25,964 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 21:18:25,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=128, Invalid=1060, Unknown=2, NotChecked=0, Total=1190 [2019-11-06 21:18:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 21:18:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-11-06 21:18:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:18:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-11-06 21:18:25,978 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 44 [2019-11-06 21:18:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:25,979 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-11-06 21:18:25,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-06 21:18:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-11-06 21:18:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 21:18:25,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:25,983 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:26,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:26,191 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1156352198, now seen corresponding path program 1 times [2019-11-06 21:18:26,191 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:26,192 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273950299] [2019-11-06 21:18:26,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:27,286 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-11-06 21:18:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:27,757 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-06 21:18:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:18:27,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273950299] [2019-11-06 21:18:27,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805622101] [2019-11-06 21:18:27,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:18:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:27,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 91 conjunts are in the unsatisfiable core [2019-11-06 21:18:27,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:28,007 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 [2019-11-06 21:18:28,007 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,009 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,010 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-06 21:18:28,181 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,181 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-06 21:18:28,182 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,187 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,187 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,188 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-11-06 21:18:28,232 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2019-11-06 21:18:28,232 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,237 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,238 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,238 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-06 21:18:28,323 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,324 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-11-06 21:18:28,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:18:28,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:28,330 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-06 21:18:28,349 INFO L567 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2019-11-06 21:18:28,350 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. [2019-11-06 21:18:28,351 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2019-11-06 21:18:28,553 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-11-06 21:18:28,563 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 [2019-11-06 21:18:28,564 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,611 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:28,611 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 46 [2019-11-06 21:18:28,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:28,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:28,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:28,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:28,618 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:28,640 INFO L567 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2019-11-06 21:18:28,641 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:28,641 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-11-06 21:18:31,431 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) 4)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= (store |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.offset| node_create_~temp~0.base) 4))) |c_#memory_$Pointer$.offset|) (not (= 0 node_create_~temp~0.base)))) is different from true [2019-11-06 21:18:47,762 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-06 21:18:47,780 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:47,809 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:47,810 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:47,810 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:59