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_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:08:21,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:08:21,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:08:21,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:08:21,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:08:21,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:08:21,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:08:21,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:08:21,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:08:21,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:08:21,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:08:21,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:08:21,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:08:21,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:08:21,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:08:21,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:08:21,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:08:21,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:08:21,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:08:21,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:08:21,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:08:21,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:08:21,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:08:21,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:08:21,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 02:08:21,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 02:08:21,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 02:08:21,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 02:08:21,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 02:08:21,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 02:08:21,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 02:08:21,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 02:08:21,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 02:08:21,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 02:08:21,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 02:08:21,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 02:08:21,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 02:08:21,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 02:08:21,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:08:21,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:08:21,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:08:21,801 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 [2019-09-08 02:08:21,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:08:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:08:21,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:08:21,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:08:21,825 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:08:21,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:08:21,826 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:08:21,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:08:21,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:08:21,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:08:21,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:08:21,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:08:21,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:08:21,827 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:08:21,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:08:21,827 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:08:21,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:08:21,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:08:21,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:08:21,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:08:21,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:08:21,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:08:21,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:08:21,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:08:21,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:08:21,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:08:21,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:08:21,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:08:21,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:08:21,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:08:21,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:08:21,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:08:21,896 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:08:21,896 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:08:21,897 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2019-09-08 02:08:21,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6e1d4f0/c5ca77c98851483b9eae41c575850626/FLAG52ba5bb0b [2019-09-08 02:08:22,557 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:08:22,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2019-09-08 02:08:22,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6e1d4f0/c5ca77c98851483b9eae41c575850626/FLAG52ba5bb0b [2019-09-08 02:08:22,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6e1d4f0/c5ca77c98851483b9eae41c575850626 [2019-09-08 02:08:22,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:08:22,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:08:22,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:08:22,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:08:22,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:08:22,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:08:22" (1/1) ... [2019-09-08 02:08:22,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20396fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:22, skipping insertion in model container [2019-09-08 02:08:22,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:08:22" (1/1) ... [2019-09-08 02:08:22,850 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:08:22,889 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:08:23,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:08:23,311 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:08:23,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:08:23,451 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:08:23,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23 WrapperNode [2019-09-08 02:08:23,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:08:23,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:08:23,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:08:23,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:08:23,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (1/1) ... [2019-09-08 02:08:23,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:08:23,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:08:23,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:08:23,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:08:23,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (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 [2019-09-08 02:08:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:08:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:08:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 02:08:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 02:08:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-08 02:08:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-08 02:08:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-08 02:08:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-08 02:08:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-09-08 02:08:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:08:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:08:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 02:08:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 02:08:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 02:08:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 02:08:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 02:08:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 02:08:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 02:08:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 02:08:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 02:08:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 02:08:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 02:08:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 02:08:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 02:08:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 02:08:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 02:08:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 02:08:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 02:08:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 02:08:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 02:08:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 02:08:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 02:08:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 02:08:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 02:08:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 02:08:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 02:08:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 02:08:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 02:08:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 02:08:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 02:08:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 02:08:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 02:08:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 02:08:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 02:08:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 02:08:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 02:08:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 02:08:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 02:08:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 02:08:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 02:08:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 02:08:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 02:08:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 02:08:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 02:08:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 02:08:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 02:08:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 02:08:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 02:08:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 02:08:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 02:08:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 02:08:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-08 02:08:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-08 02:08:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 02:08:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 02:08:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 02:08:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-08 02:08:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-08 02:08:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 02:08:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:08:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:08:24,020 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-08 02:08:24,254 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:08:24,254 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 02:08:24,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:08:24 BoogieIcfgContainer [2019-09-08 02:08:24,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:08:24,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:08:24,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:08:24,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:08:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:08:22" (1/3) ... [2019-09-08 02:08:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4b3c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:08:24, skipping insertion in model container [2019-09-08 02:08:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:23" (2/3) ... [2019-09-08 02:08:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4b3c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:08:24, skipping insertion in model container [2019-09-08 02:08:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:08:24" (3/3) ... [2019-09-08 02:08:24,264 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2019-09-08 02:08:24,275 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:08:24,283 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:08:24,299 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:08:24,325 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:08:24,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:08:24,325 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:08:24,326 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:08:24,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:08:24,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:08:24,326 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:08:24,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:08:24,326 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:08:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-09-08 02:08:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-08 02:08:24,351 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:24,352 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:08:24,354 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:24,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1950085846, now seen corresponding path program 1 times [2019-09-08 02:08:24,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:24,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:24,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:24,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:24,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:24,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 02:08:24,542 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 02:08:24,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 02:08:24,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:08:24,561 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2019-09-08 02:08:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:24,596 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2019-09-08 02:08:24,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 02:08:24,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-09-08 02:08:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:24,610 INFO L225 Difference]: With dead ends: 86 [2019-09-08 02:08:24,610 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 02:08:24,614 INFO L628 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 [2019-09-08 02:08:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 02:08:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-08 02:08:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-08 02:08:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-08 02:08:24,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 31 [2019-09-08 02:08:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:24,670 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-08 02:08:24,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 02:08:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-08 02:08:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-08 02:08:24,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:24,673 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:08:24,673 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:24,674 INFO L82 PathProgramCache]: Analyzing trace with hash -778212150, now seen corresponding path program 1 times [2019-09-08 02:08:24,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:24,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:24,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:24,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 02:08:24,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 02:08:24,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 02:08:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 02:08:24,853 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 3 states. [2019-09-08 02:08:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:24,874 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-09-08 02:08:24,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 02:08:24,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-09-08 02:08:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:24,878 INFO L225 Difference]: With dead ends: 50 [2019-09-08 02:08:24,878 INFO L226 Difference]: Without dead ends: 41 [2019-09-08 02:08:24,879 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 02:08:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-08 02:08:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-09-08 02:08:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-08 02:08:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-09-08 02:08:24,899 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 31 [2019-09-08 02:08:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:24,904 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-09-08 02:08:24,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 02:08:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-09-08 02:08:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-08 02:08:24,907 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:24,907 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:08:24,908 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1587558776, now seen corresponding path program 1 times [2019-09-08 02:08:24,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:24,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:24,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:24,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:25,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:25,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:08:25,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:08:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:08:25,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:08:25,035 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 5 states. [2019-09-08 02:08:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:25,104 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2019-09-08 02:08:25,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 02:08:25,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-09-08 02:08:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:25,106 INFO L225 Difference]: With dead ends: 68 [2019-09-08 02:08:25,106 INFO L226 Difference]: Without dead ends: 42 [2019-09-08 02:08:25,107 INFO L628 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 [2019-09-08 02:08:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-08 02:08:25,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-09-08 02:08:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 02:08:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-09-08 02:08:25,114 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 31 [2019-09-08 02:08:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:25,115 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-09-08 02:08:25,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:08:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-09-08 02:08:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-08 02:08:25,116 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:25,117 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:08:25,117 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1540600577, now seen corresponding path program 1 times [2019-09-08 02:08:25,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:25,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 02:08:25,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:08:25,228 INFO L223 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) [2019-09-08 02:08:25,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:08:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:25,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 02:08:25,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:08:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:25,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:08:25,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-08 02:08:25,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:08:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:08:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:08:25,419 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2019-09-08 02:08:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:25,522 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2019-09-08 02:08:25,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 02:08:25,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-09-08 02:08:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:25,525 INFO L225 Difference]: With dead ends: 72 [2019-09-08 02:08:25,525 INFO L226 Difference]: Without dead ends: 46 [2019-09-08 02:08:25,526 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-08 02:08:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-08 02:08:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-09-08 02:08:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 02:08:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-09-08 02:08:25,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 40 [2019-09-08 02:08:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:25,541 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-09-08 02:08:25,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:08:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-09-08 02:08:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 02:08:25,547 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:25,547 INFO L399 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, 1, 1] [2019-09-08 02:08:25,548 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash -574636376, now seen corresponding path program 2 times [2019-09-08 02:08:25,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:25,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:25,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:25,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 02:08:25,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:25,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:08:25,712 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:08:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:08:25,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:08:25,713 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2019-09-08 02:08:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:25,760 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2019-09-08 02:08:25,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 02:08:25,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2019-09-08 02:08:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:25,762 INFO L225 Difference]: With dead ends: 52 [2019-09-08 02:08:25,762 INFO L226 Difference]: Without dead ends: 42 [2019-09-08 02:08:25,763 INFO L628 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 [2019-09-08 02:08:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-08 02:08:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-08 02:08:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 02:08:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-09-08 02:08:25,770 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 49 [2019-09-08 02:08:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:25,770 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-09-08 02:08:25,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:08:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-09-08 02:08:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-08 02:08:25,771 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:25,772 INFO L399 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, 1, 1, 1] [2019-09-08 02:08:25,772 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:25,772 INFO L82 PathProgramCache]: Analyzing trace with hash 341969372, now seen corresponding path program 1 times [2019-09-08 02:08:25,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:25,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:25,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 02:08:25,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:26,922 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 02:08:27,199 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-08 02:08:27,478 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-08 02:08:27,826 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-09-08 02:08:28,242 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-08 02:08:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 02:08:28,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:08:28,432 INFO L223 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) [2019-09-08 02:08:28,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:08:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:28,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 121 conjunts are in the unsatisfiable core [2019-09-08 02:08:28,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:08:28,684 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 [2019-09-08 02:08:28,684 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:28,696 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,696 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-09-08 02:08:28,714 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 [2019-09-08 02:08:28,715 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,721 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:28,721 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,722 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-08 02:08:28,749 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 [2019-09-08 02:08:28,750 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,759 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:28,759 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:28,760 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2019-09-08 02:08:29,017 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 [2019-09-08 02:08:29,017 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:29,036 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:29,044 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 [2019-09-08 02:08:29,045 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:29,060 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:29,065 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 [2019-09-08 02:08:29,066 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:29,080 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:29,086 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 [2019-09-08 02:08:29,086 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:29,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:29,101 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. [2019-09-08 02:08:29,101 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:59, output treesize:13 [2019-09-08 02:08:29,237 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:29,261 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:29,262 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. [2019-09-08 02:08:29,263 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:68 [2019-09-08 02:08:30,650 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 40 [2019-09-08 02:08:31,787 WARN L188 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-08 02:08:33,052 WARN L188 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 50 [2019-09-08 02:08:34,246 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 50 [2019-09-08 02:08:34,263 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:34,318 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:34,325 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:34,381 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:34,382 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:34,382 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:167, output treesize:322 [2019-09-08 02:08:38,569 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:38,639 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:38,641 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-09-08 02:08:38,641 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:470, output treesize:508 [2019-09-08 02:08:55,336 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-09-08 02:08:55,373 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:55,374 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 15 treesize of output 19 [2019-09-08 02:08:55,374 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:55,520 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-09-08 02:08:55,520 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:55,530 INFO L392 ElimStorePlain]: Different costs {3=[|v_#memory_int_BEFORE_CALL_4|], 16=[|v_#memory_$Pointer$.base_BEFORE_CALL_4|, |v_#memory_$Pointer$.offset_BEFORE_CALL_4|]} [2019-09-08 02:08:55,542 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-08 02:08:55,545 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:55,547 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 61 [2019-09-08 02:08:55,548 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:55,673 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-09-08 02:08:55,673 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:55,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:55,683 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:55,804 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 02:08:55,805 INFO L341 Elim1Store]: treesize reduction 33, result has 85.7 percent of original size [2019-09-08 02:08:55,806 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 299 treesize of output 352 [2019-09-08 02:08:55,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:08:55,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 02:08:55,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:08:55,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:08:55,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:08:55,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:08:55,818 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:55,996 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-08 02:08:55,996 INFO L567 ElimStorePlain]: treesize reduction 573, result has 30.6 percent of original size [2019-09-08 02:08:55,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:56,004 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:56,006 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:56,009 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 98 [2019-09-08 02:08:56,010 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,056 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,058 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,059 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:559, output treesize:99 [2019-09-08 02:08:56,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:56,186 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,187 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 41 [2019-09-08 02:08:56,188 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,208 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:08:56,215 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2019-09-08 02:08:56,216 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,227 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,228 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,228 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:110, output treesize:17 [2019-09-08 02:08:56,315 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-08 02:08:56,317 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,317 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2019-09-08 02:08:56,318 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,327 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:56,328 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:56,329 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2019-09-08 02:08:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 02:08:56,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:08:56,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 37 [2019-09-08 02:08:56,421 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-08 02:08:56,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-08 02:08:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1209, Unknown=10, NotChecked=0, Total=1332 [2019-09-08 02:08:56,422 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 37 states. [2019-09-08 02:08:56,898 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-09-08 02:09:09,553 WARN L188 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 02:09:13,864 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-09-08 02:09:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:09:42,409 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2019-09-08 02:09:42,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 02:09:42,417 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 50 [2019-09-08 02:09:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:09:42,421 INFO L225 Difference]: With dead ends: 60 [2019-09-08 02:09:42,421 INFO L226 Difference]: Without dead ends: 58 [2019-09-08 02:09:42,422 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=183, Invalid=2061, Unknown=12, NotChecked=0, Total=2256 [2019-09-08 02:09:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-09-08 02:09:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2019-09-08 02:09:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-08 02:09:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-09-08 02:09:42,438 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 50 [2019-09-08 02:09:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:09:42,439 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-09-08 02:09:42,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-08 02:09:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-09-08 02:09:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-08 02:09:42,440 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:09:42,440 INFO L399 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, 1, 1, 1] [2019-09-08 02:09:42,440 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:09:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:09:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash 341967698, now seen corresponding path program 1 times [2019-09-08 02:09:42,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:09:42,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:09:42,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:09:42,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:09:42,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:09:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:09:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 02:09:43,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:09:43,004 INFO L223 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 [2019-09-08 02:09:43,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:09:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:09:43,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 44 conjunts are in the unsatisfiable core [2019-09-08 02:09:43,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:09:43,268 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 [2019-09-08 02:09:43,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:09:43,273 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:09:43,273 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:09:43,274 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2019-09-08 02:09:43,507 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 02:09:43,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:09:43,518 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. [2019-09-08 02:09:43,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:45 [2019-09-08 02:09:45,657 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-08 02:09:47,665 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_insert_~new_node~0.base Int) (sll_insert_~snd_to_last~0.offset Int) (sll_insert_~last~0.base Int) (sll_insert_~snd_to_last~0.base Int) (sll_insert_~new_node~0.offset Int) (v_DerPreprocessor_5 Int)) (and (<= (+ |c_#StackHeapBarrier| 1) sll_insert_~new_node~0.base) (= (let ((.cse0 (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| sll_insert_~new_node~0.base (store (store (select |c_old(#memory_$Pointer$.base)| sll_insert_~new_node~0.base) 4 0) 0 v_DerPreprocessor_5)))) (store .cse1 sll_insert_~snd_to_last~0.base (store (select .cse1 sll_insert_~snd_to_last~0.base) (+ sll_insert_~snd_to_last~0.offset 4) sll_insert_~new_node~0.base))))) (store .cse0 sll_insert_~new_node~0.base (store (select .cse0 sll_insert_~new_node~0.base) (+ sll_insert_~new_node~0.offset 4) sll_insert_~last~0.base))) |c_#memory_$Pointer$.base|) (not (= 0 sll_insert_~new_node~0.base)))) is different from true [2019-09-08 02:09:47,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 02:09:47,880 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-08 02:09:47,880 INFO L341 Elim1Store]: treesize reduction 46, result has 76.6 percent of original size [2019-09-08 02:09:47,881 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 164 [2019-09-08 02:09:47,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:47,883 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:09:47,996 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-08 02:09:47,996 INFO L567 ElimStorePlain]: treesize reduction 78, result has 54.1 percent of original size [2019-09-08 02:09:47,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 02:09:47,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:47,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 02:09:48,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:09:48,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:09:48,011 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:95, output treesize:8 [2019-09-08 02:09:48,016 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 16 treesize of output 8 [2019-09-08 02:09:48,016 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:09:48,018 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:09:48,018 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:09:48,018 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2019-09-08 02:09:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 02:09:48,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:09:48,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2019-09-08 02:09:48,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 02:09:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 02:09:48,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1020, Unknown=2, NotChecked=64, Total=1190 [2019-09-08 02:09:48,031 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 35 states. [2019-09-08 02:10:04,720 WARN L188 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2019-09-08 02:10:16,983 WARN L188 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-08 02:10:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:10:19,185 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2019-09-08 02:10:19,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-08 02:10:19,185 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2019-09-08 02:10:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:10:19,187 INFO L225 Difference]: With dead ends: 71 [2019-09-08 02:10:19,187 INFO L226 Difference]: Without dead ends: 68 [2019-09-08 02:10:19,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=192, Invalid=2061, Unknown=7, NotChecked=92, Total=2352 [2019-09-08 02:10:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-09-08 02:10:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2019-09-08 02:10:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-09-08 02:10:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2019-09-08 02:10:19,198 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 50 [2019-09-08 02:10:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:10:19,199 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-09-08 02:10:19,199 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 02:10:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2019-09-08 02:10:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-08 02:10:19,200 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:10:19,200 INFO L399 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, 1, 1, 1] [2019-09-08 02:10:19,201 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:10:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:10:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash -467377254, now seen corresponding path program 1 times [2019-09-08 02:10:19,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:10:19,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:10:19,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:10:19,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:10:19,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:10:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:10:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 02:10:19,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:10:19,482 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:10:19,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:10:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:10:19,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-08 02:10:19,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:10:19,699 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 [2019-09-08 02:10:19,699 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:10:19,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:10:19,705 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:10:19,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-08 02:10:21,738 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true