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_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:02:59,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:02:59,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:02:59,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:02:59,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:02:59,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:02:59,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:02:59,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:02:59,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:02:59,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:02:59,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:02:59,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:02:59,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:02:59,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:02:59,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:02:59,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:02:59,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:02:59,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:02:59,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:02:59,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:02:59,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:02:59,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:02:59,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:02:59,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:02:59,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:02:59,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:02:59,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:02:59,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:02:59,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:02:59,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:02:59,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:02:59,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:02:59,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:02:59,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:02:59,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:02:59,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:02:59,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:02:59,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:02:59,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:02:59,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:02:59,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:02:59,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:02:59,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:02:59,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:02:59,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:02:59,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:02:59,345 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:02:59,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:02:59,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:02:59,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:02:59,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:02:59,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:02:59,347 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:02:59,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:02:59,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:02:59,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:02:59,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:02:59,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:02:59,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:02:59,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:02:59,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:02:59,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:02:59,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:02:59,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:02:59,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:02:59,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:02:59,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:02:59,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:02:59,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:02:59,404 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:02:59,404 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:02:59,405 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2019-09-20 13:02:59,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c947bf06/9be9920cc13c4713b242f37255dacebf/FLAG9aa7ac765 [2019-09-20 13:03:00,017 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:03:00,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2019-09-20 13:03:00,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c947bf06/9be9920cc13c4713b242f37255dacebf/FLAG9aa7ac765 [2019-09-20 13:03:00,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c947bf06/9be9920cc13c4713b242f37255dacebf [2019-09-20 13:03:00,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:03:00,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:03:00,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:03:00,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:03:00,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:03:00,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:00,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cad09c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00, skipping insertion in model container [2019-09-20 13:03:00,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:00,323 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:03:00,372 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:03:00,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:03:00,853 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:03:00,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:03:00,965 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:03:00,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00 WrapperNode [2019-09-20 13:03:00,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:03:00,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:03:00,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:03:00,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:03:00,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:00,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:00,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:00,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:01,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:01,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:01,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... [2019-09-20 13:03:01,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:03:01,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:03:01,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:03:01,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:03:01,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:03:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:03:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:03:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:03:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:03:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:03:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:03:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-20 13:03:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-20 13:03:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2019-09-20 13:03:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2019-09-20 13:03:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:03:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:03:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:03:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:03:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:03:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:03:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:03:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:03:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:03:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:03:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:03:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:03:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:03:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:03:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:03:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:03:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:03:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:03:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:03:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:03:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:03:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:03:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:03:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:03:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:03:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:03:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:03:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:03:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:03:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:03:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:03:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:03:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:03:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:03:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:03:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:03:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:03:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:03:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:03:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:03:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:03:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:03:01,109 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:03:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:03:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:03:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:03:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:03:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:03:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:03:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:03:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:03:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:03:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:03:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:03:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:03:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:03:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:03:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:03:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:03:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:03:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:03:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:03:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:03:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:03:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:03:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:03:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:03:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:03:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:03:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:03:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:03:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:03:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:03:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:03:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2019-09-20 13:03:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:03:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2019-09-20 13:03:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:03:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:03:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:03:01,527 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:03:01,634 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:03:01,634 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 13:03:01,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:03:01 BoogieIcfgContainer [2019-09-20 13:03:01,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:03:01,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:03:01,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:03:01,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:03:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:03:00" (1/3) ... [2019-09-20 13:03:01,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2456d088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:03:01, skipping insertion in model container [2019-09-20 13:03:01,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:00" (2/3) ... [2019-09-20 13:03:01,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2456d088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:03:01, skipping insertion in model container [2019-09-20 13:03:01,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:03:01" (3/3) ... [2019-09-20 13:03:01,644 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2019-09-20 13:03:01,654 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:03:01,662 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:03:01,679 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:03:01,706 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:03:01,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:03:01,706 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:03:01,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:03:01,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:03:01,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:03:01,707 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:03:01,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:03:01,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:03:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-20 13:03:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:03:01,729 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:01,730 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:01,732 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1559034541, now seen corresponding path program 1 times [2019-09-20 13:03:01,738 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:01,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:01,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:01,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:01,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:01,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:03:01,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:03:01,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:03:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:03:01,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:03:01,917 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-20 13:03:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:01,967 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2019-09-20 13:03:01,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:03:01,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-20 13:03:01,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:01,983 INFO L225 Difference]: With dead ends: 90 [2019-09-20 13:03:01,984 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:03:01,991 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:03:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:03:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-20 13:03:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 13:03:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-09-20 13:03:02,059 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2019-09-20 13:03:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:02,060 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-09-20 13:03:02,060 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:03:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-09-20 13:03:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:03:02,062 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:02,063 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:02,063 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:02,065 INFO L82 PathProgramCache]: Analyzing trace with hash -404189262, now seen corresponding path program 1 times [2019-09-20 13:03:02,065 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:02,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:02,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:02,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:02,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:02,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:03:02,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:03:02,206 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:03:02,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:03:02,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:03:02,208 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2019-09-20 13:03:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:02,294 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2019-09-20 13:03:02,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:03:02,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-09-20 13:03:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:02,300 INFO L225 Difference]: With dead ends: 65 [2019-09-20 13:03:02,300 INFO L226 Difference]: Without dead ends: 52 [2019-09-20 13:03:02,302 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:03:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-20 13:03:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2019-09-20 13:03:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:03:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-20 13:03:02,337 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 25 [2019-09-20 13:03:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:02,338 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-20 13:03:02,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:03:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-20 13:03:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 13:03:02,341 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:02,341 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:02,343 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash 856367100, now seen corresponding path program 1 times [2019-09-20 13:03:02,343 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:02,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:02,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:02,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:02,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:02,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:02,634 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:02,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:02,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:03:02,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:03:02,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:03:02,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 13 [2019-09-20 13:03:02,828 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:03:02,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:03:02,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:03:02,829 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2019-09-20 13:03:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:03,101 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2019-09-20 13:03:03,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:03:03,102 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2019-09-20 13:03:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:03,106 INFO L225 Difference]: With dead ends: 81 [2019-09-20 13:03:03,106 INFO L226 Difference]: Without dead ends: 55 [2019-09-20 13:03:03,109 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:03:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-20 13:03:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2019-09-20 13:03:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:03:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-09-20 13:03:03,132 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 33 [2019-09-20 13:03:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:03,132 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-09-20 13:03:03,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:03:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-09-20 13:03:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-20 13:03:03,135 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:03,135 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:03,136 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1586404999, now seen corresponding path program 1 times [2019-09-20 13:03:03,137 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:03,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:03,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:03,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:03,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:03,436 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:03,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:03,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:03:03,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:03:03,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:03,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 14 [2019-09-20 13:03:03,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:03:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:03:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:03:03,584 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 14 states. [2019-09-20 13:03:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:03,841 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2019-09-20 13:03:03,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:03:03,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-09-20 13:03:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:03,842 INFO L225 Difference]: With dead ends: 85 [2019-09-20 13:03:03,843 INFO L226 Difference]: Without dead ends: 59 [2019-09-20 13:03:03,843 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:03:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-09-20 13:03:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2019-09-20 13:03:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-20 13:03:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-09-20 13:03:03,851 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 42 [2019-09-20 13:03:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:03,852 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2019-09-20 13:03:03,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:03:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2019-09-20 13:03:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:03:03,854 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:03,855 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-09-20 13:03:03,855 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1073302620, now seen corresponding path program 2 times [2019-09-20 13:03:03,855 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:03,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:03,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:03,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-20 13:03:04,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:04,025 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:04,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:03:04,118 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-09-20 13:03:04,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:03:04,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:03:04,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-20 13:03:04,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:03:04,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2019-09-20 13:03:04,149 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-20 13:03:04,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-20 13:03:04,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-20 13:03:04,152 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 11 states. [2019-09-20 13:03:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:04,299 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2019-09-20 13:03:04,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:03:04,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2019-09-20 13:03:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:04,301 INFO L225 Difference]: With dead ends: 86 [2019-09-20 13:03:04,301 INFO L226 Difference]: Without dead ends: 65 [2019-09-20 13:03:04,302 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:03:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-09-20 13:03:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2019-09-20 13:03:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-09-20 13:03:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2019-09-20 13:03:04,312 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 51 [2019-09-20 13:03:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:04,312 INFO L475 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2019-09-20 13:03:04,313 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-20 13:03:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2019-09-20 13:03:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:03:04,315 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:04,315 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:04,315 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:04,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1633721938, now seen corresponding path program 1 times [2019-09-20 13:03:04,316 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:04,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:04,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:04,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:03:04,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:03:04,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:04,390 INFO L224 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 [2019-09-20 13:03:04,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 13:03:04,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:03:04,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:04,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-09-20 13:03:04,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:03:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:03:04,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:03:04,562 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 5 states. [2019-09-20 13:03:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:04,628 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2019-09-20 13:03:04,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:03:04,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2019-09-20 13:03:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:04,631 INFO L225 Difference]: With dead ends: 86 [2019-09-20 13:03:04,631 INFO L226 Difference]: Without dead ends: 67 [2019-09-20 13:03:04,632 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:03:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-09-20 13:03:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2019-09-20 13:03:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-20 13:03:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2019-09-20 13:03:04,642 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 53 [2019-09-20 13:03:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:04,643 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2019-09-20 13:03:04,643 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:03:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2019-09-20 13:03:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-20 13:03:04,645 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:04,646 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:03:04,646 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:04,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2044789832, now seen corresponding path program 2 times [2019-09-20 13:03:04,647 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:04,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:04,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:05,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:05,973 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:06,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:03:06,104 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:03:06,105 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:03:06,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 116 conjunts are in the unsatisfiable core [2019-09-20 13:03:06,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:06,158 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-09-20 13:03:06,158 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,162 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,163 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,163 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-09-20 13:03:06,268 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,269 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-09-20 13:03:06,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,275 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-09-20 13:03:06,293 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:03:06,294 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,306 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,311 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:03:06,311 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,320 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,320 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,321 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:12 [2019-09-20 13:03:06,830 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 29 treesize of output 19 [2019-09-20 13:03:06,831 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,845 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,846 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,846 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:120, output treesize:110 [2019-09-20 13:03:06,934 INFO L392 ElimStorePlain]: Different costs {2=[|v_old(#memory_$Pointer$.offset)_AFTER_CALL_17|], 6=[|v_#memory_$Pointer$.base_BEFORE_CALL_2|]} [2019-09-20 13:03:06,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:06,940 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 86 [2019-09-20 13:03:06,941 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:06,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,964 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:03:07,044 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:07,045 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 165 [2019-09-20 13:03:07,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-20 13:03:07,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:07,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:07,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:07,054 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2019-09-20 13:03:07,102 INFO L567 ElimStorePlain]: treesize reduction 315, result has 9.7 percent of original size [2019-09-20 13:03:07,102 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:07,103 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:125, output treesize:33 [2019-09-20 13:03:11,405 WARN L191 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-20 13:03:11,426 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 45 treesize of output 29 [2019-09-20 13:03:11,427 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:11,451 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:11,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:11,458 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 37 treesize of output 25 [2019-09-20 13:03:11,459 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:11,470 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:11,474 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 33 treesize of output 32 [2019-09-20 13:03:11,475 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:11,485 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:11,486 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:11,486 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:74, output treesize:33 [2019-09-20 13:03:33,226 INFO L392 ElimStorePlain]: Different costs {1=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 2=[|#memory_int|]} [2019-09-20 13:03:33,234 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,235 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 81 treesize of output 69 [2019-09-20 13:03:33,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:33,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:33,242 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:33,299 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,309 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,310 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 49 [2019-09-20 13:03:33,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:33,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:33,315 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:33,367 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,384 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,384 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2019-09-20 13:03:33,386 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:33,434 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:33,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:33,440 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:33,440 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:95, output treesize:20 [2019-09-20 13:03:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:03:33,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:33,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 50 [2019-09-20 13:03:33,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-09-20 13:03:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-09-20 13:03:33,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2295, Unknown=13, NotChecked=0, Total=2450 [2019-09-20 13:03:33,591 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 50 states.