/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:18:44,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:18:44,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:18:44,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:18:44,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:18:44,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:18:44,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:18:44,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:18:44,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:18:44,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:18:44,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:18:44,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:18:44,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:18:44,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:18:44,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:18:44,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:18:44,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:18:44,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:18:44,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:18:44,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:18:44,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:18:44,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:18:44,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:18:44,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:18:44,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:18:44,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:18:44,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:18:44,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:18:44,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:18:44,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:18:44,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:18:44,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:18:44,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:18:44,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:18:44,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:18:44,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:18:44,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:18:44,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:18:44,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:18:44,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:18:44,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:18:44,839 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 21:18:44,853 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:18:44,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:18:44,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:18:44,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:18:44,855 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:18:44,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:18:44,856 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:18:44,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:18:44,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:18:44,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:18:44,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:18:44,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:18:44,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:18:44,858 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:18:44,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:18:44,858 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:18:44,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:18:44,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:18:44,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:18:44,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:18:44,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:18:44,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:18:44,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:18:44,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:18:44,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:18:44,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:18:44,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:18:44,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:18:44,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:18:45,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:18:45,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:18:45,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:18:45,158 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:18:45,158 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:18:45,159 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2019-11-06 21:18:45,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba63dbe72/0da12c7432f844aba0f5ff3b535daaa4/FLAG71d019fb4 [2019-11-06 21:18:45,774 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:18:45,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2019-11-06 21:18:45,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba63dbe72/0da12c7432f844aba0f5ff3b535daaa4/FLAG71d019fb4 [2019-11-06 21:18:46,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba63dbe72/0da12c7432f844aba0f5ff3b535daaa4 [2019-11-06 21:18:46,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:18:46,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:18:46,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:46,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:18:46,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:18:46,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f9ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46, skipping insertion in model container [2019-11-06 21:18:46,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,083 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:18:46,126 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:18:46,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:46,644 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:18:46,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:46,770 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:18:46,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46 WrapperNode [2019-11-06 21:18:46,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:46,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:18:46,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:18:46,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:18:46,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (1/1) ... [2019-11-06 21:18:46,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:18:46,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:18:46,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:18:46,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:18:46,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (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 21:18:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:18:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:18:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:18:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:18:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:18:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:18:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-06 21:18:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-06 21:18:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-06 21:18:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:18:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:18:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:18:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:18:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:18:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:18:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:18:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:18:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:18:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:18:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:18:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:18:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:18:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:18:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:18:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:18:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:18:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:18:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:18:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:18:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:18:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:18:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:18:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:18:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:18:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:18:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:18:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:18:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:18:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:18:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:18:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-06 21:18:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-06 21:18:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:18:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:18:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:18:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:18:47,315 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:18:47,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:18:47,553 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:18:47,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:47 BoogieIcfgContainer [2019-11-06 21:18:47,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:18:47,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:18:47,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:18:47,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:18:47,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:46" (1/3) ... [2019-11-06 21:18:47,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7204f6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:47, skipping insertion in model container [2019-11-06 21:18:47,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:46" (2/3) ... [2019-11-06 21:18:47,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7204f6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:47, skipping insertion in model container [2019-11-06 21:18:47,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:47" (3/3) ... [2019-11-06 21:18:47,562 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2019-11-06 21:18:47,573 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:18:47,581 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:18:47,594 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:18:47,621 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:18:47,622 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:18:47,622 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:18:47,622 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:18:47,623 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:18:47,623 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:18:47,623 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:18:47,623 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:18:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-06 21:18:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:18:47,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:47,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:47,659 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1925718240, now seen corresponding path program 1 times [2019-11-06 21:18:47,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:47,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57137687] [2019-11-06 21:18:47,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:48,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57137687] [2019-11-06 21:18:48,068 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:48,068 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:18:48,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109440431] [2019-11-06 21:18:48,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:18:48,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:48,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:18:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:18:48,113 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2019-11-06 21:18:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:48,332 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2019-11-06 21:18:48,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:18:48,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-06 21:18:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:48,346 INFO L225 Difference]: With dead ends: 102 [2019-11-06 21:18:48,346 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 21:18:48,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:18:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 21:18:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-11-06 21:18:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-06 21:18:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-11-06 21:18:48,402 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 31 [2019-11-06 21:18:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:48,402 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-11-06 21:18:48,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:18:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-11-06 21:18:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:18:48,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:48,405 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:48,405 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:48,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1001067800, now seen corresponding path program 1 times [2019-11-06 21:18:48,406 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:48,406 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386301565] [2019-11-06 21:18:48,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:48,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386301565] [2019-11-06 21:18:48,600 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:48,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:18:48,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509801885] [2019-11-06 21:18:48,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:18:48,603 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:48,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:18:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:18:48,604 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 5 states. [2019-11-06 21:18:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:48,769 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-06 21:18:48,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:18:48,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-06 21:18:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:48,772 INFO L225 Difference]: With dead ends: 63 [2019-11-06 21:18:48,772 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 21:18:48,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:18:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 21:18:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2019-11-06 21:18:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:18:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2019-11-06 21:18:48,783 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 31 [2019-11-06 21:18:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:48,784 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2019-11-06 21:18:48,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:18:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2019-11-06 21:18:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:18:48,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:48,785 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:48,786 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash 191721174, now seen corresponding path program 1 times [2019-11-06 21:18:48,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:48,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675974487] [2019-11-06 21:18:48,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:49,029 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675974487] [2019-11-06 21:18:49,030 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:49,030 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:18:49,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131785727] [2019-11-06 21:18:49,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:18:49,031 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:49,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:18:49,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:18:49,032 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 11 states. [2019-11-06 21:18:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:49,432 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2019-11-06 21:18:49,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:18:49,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2019-11-06 21:18:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:49,434 INFO L225 Difference]: With dead ends: 79 [2019-11-06 21:18:49,434 INFO L226 Difference]: Without dead ends: 49 [2019-11-06 21:18:49,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:18:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-06 21:18:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-11-06 21:18:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:18:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-11-06 21:18:49,452 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 31 [2019-11-06 21:18:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:49,452 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-11-06 21:18:49,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:18:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-11-06 21:18:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-06 21:18:49,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:49,456 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:49,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash -833744621, now seen corresponding path program 1 times [2019-11-06 21:18:49,457 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:49,457 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46162101] [2019-11-06 21:18:49,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:49,703 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46162101] [2019-11-06 21:18:49,703 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609713413] [2019-11-06 21:18:49,703 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 21:18:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:49,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:18:49,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:49,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:49,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2019-11-06 21:18:49,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364431437] [2019-11-06 21:18:49,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 21:18:49,939 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:49,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 21:18:49,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:18:49,941 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 13 states. [2019-11-06 21:18:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:50,245 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2019-11-06 21:18:50,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:18:50,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2019-11-06 21:18:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:50,247 INFO L225 Difference]: With dead ends: 83 [2019-11-06 21:18:50,247 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 21:18:50,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:18:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 21:18:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2019-11-06 21:18:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-06 21:18:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2019-11-06 21:18:50,256 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 40 [2019-11-06 21:18:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:50,257 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2019-11-06 21:18:50,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 21:18:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2019-11-06 21:18:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 21:18:50,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:50,259 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:50,462 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:50,463 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash -159145098, now seen corresponding path program 2 times [2019-11-06 21:18:50,464 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:50,464 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171338782] [2019-11-06 21:18:50,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:18:50,662 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171338782] [2019-11-06 21:18:50,662 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:50,662 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:18:50,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102903301] [2019-11-06 21:18:50,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:18:50,663 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:18:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:18:50,664 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 8 states. [2019-11-06 21:18:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:50,905 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-11-06 21:18:50,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:18:50,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-11-06 21:18:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:50,908 INFO L225 Difference]: With dead ends: 60 [2019-11-06 21:18:50,908 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 21:18:50,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:18:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 21:18:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-11-06 21:18:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 21:18:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-11-06 21:18:50,916 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 49 [2019-11-06 21:18:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:50,916 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-11-06 21:18:50,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:18:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-11-06 21:18:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-06 21:18:50,918 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:50,918 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:18:50,918 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 358537395, now seen corresponding path program 1 times [2019-11-06 21:18:50,919 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:50,919 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286006738] [2019-11-06 21:18:50,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:52,007 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-06 21:18:52,303 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-11-06 21:18:52,632 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-11-06 21:18:52,937 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-11-06 21:18:53,219 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-11-06 21:18:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:53,793 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2019-11-06 21:18:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:53,823 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286006738] [2019-11-06 21:18:53,823 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89240943] [2019-11-06 21:18:53,823 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 21:18:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:54,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 121 conjunts are in the unsatisfiable core [2019-11-06 21:18:54,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:54,137 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 21:18:54,137 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,145 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,146 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,146 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-06 21:18:54,180 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 [2019-11-06 21:18:54,181 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,189 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,189 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-11-06 21:18:54,224 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 [2019-11-06 21:18:54,225 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,233 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,233 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,233 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2019-11-06 21:18:54,420 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 [2019-11-06 21:18:54,420 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,441 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,447 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 [2019-11-06 21:18:54,448 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,463 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,473 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 [2019-11-06 21:18:54,474 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:54,488 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,495 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 21:18:54,496 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:54,509 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,510 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. [2019-11-06 21:18:54,510 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:59, output treesize:13 [2019-11-06 21:18:54,709 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 21:18:54,730 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:54,731 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 21:18:54,731 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:68 [2019-11-06 21:18:55,712 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-11-06 21:18:56,968 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 46 [2019-11-06 21:18:58,312 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 50 [2019-11-06 21:18:59,616 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 50 [2019-11-06 21:18:59,636 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 21:18:59,691 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:59,697 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:59,763 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:59,764 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. [2019-11-06 21:18:59,765 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:167, output treesize:322 [2019-11-06 21:19:03,963 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 21:19:04,022 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:04,024 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. [2019-11-06 21:19:04,024 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:470, output treesize:508 [2019-11-06 21:19:24,101 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-06 21:19:24,129 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:24,130 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 [2019-11-06 21:19:24,131 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:24,283 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-06 21:19:24,283 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:24,286 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|]} [2019-11-06 21:19:24,299 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 21:19:24,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,305 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 [2019-11-06 21:19:24,306 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:24,393 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:24,397 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,551 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-11-06 21:19:24,552 INFO L341 Elim1Store]: treesize reduction 33, result has 85.7 percent of original size [2019-11-06 21:19:24,553 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 [2019-11-06 21:19:24,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:19:24,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:19:24,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:19:24,562 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:24,864 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-11-06 21:19:24,864 INFO L567 ElimStorePlain]: treesize reduction 475, result has 34.8 percent of original size [2019-11-06 21:19:24,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:24,880 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 183 treesize of output 105 [2019-11-06 21:19:24,882 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:24,929 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:24,931 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. [2019-11-06 21:19:24,931 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:559, output treesize:99 [2019-11-06 21:19:25,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:25,058 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:25,059 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 [2019-11-06 21:19:25,060 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:25,074 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:25,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:19:25,079 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 [2019-11-06 21:19:25,079 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:25,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:25,090 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:19:25,090 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:110, output treesize:17 [2019-11-06 21:19:25,175 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-06 21:19:25,177 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:25,178 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 [2019-11-06 21:19:25,179 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:19:25,185 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:19:25,186 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:19:25,186 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2019-11-06 21:19:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:19:25,206 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:19:25,207 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 38 [2019-11-06 21:19:25,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519846734] [2019-11-06 21:19:25,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-06 21:19:25,208 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:19:25,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-06 21:19:25,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1279, Unknown=11, NotChecked=0, Total=1406 [2019-11-06 21:19:25,209 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 38 states. [2019-11-06 21:19:25,704 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63