java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:13:45,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:13:45,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:13:45,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:13:45,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:13:45,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:13:45,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:13:45,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:13:45,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:13:45,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:13:45,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:13:45,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:13:45,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:13:45,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:13:45,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:13:45,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:13:45,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:13:45,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:13:45,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:13:45,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:13:45,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:13:45,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:13:45,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:13:45,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:13:45,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:13:45,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:13:45,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:13:45,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:13:45,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:13:45,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:13:45,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:13:45,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:13:45,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:13:45,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:13:45,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:13:45,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:13:45,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:13:45,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:13:45,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:13:45,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:13:45,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:13:45,146 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 [2019-10-13 19:13:45,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:13:45,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:13:45,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:13:45,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:13:45,165 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:13:45,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:13:45,165 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:13:45,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:13:45,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:13:45,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:13:45,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:13:45,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:13:45,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:13:45,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:13:45,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:13:45,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:13:45,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:13:45,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:13:45,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:13:45,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:13:45,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:13:45,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:13:45,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:13:45,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:13:45,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:13:45,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:13:45,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:13:45,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:13:45,472 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:13:45,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-13 19:13:45,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa7fba6c/f280e7942e9e4e2992b707683956a757/FLAG392e03375 [2019-10-13 19:13:46,053 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:13:46,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-13 19:13:46,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa7fba6c/f280e7942e9e4e2992b707683956a757/FLAG392e03375 [2019-10-13 19:13:46,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfa7fba6c/f280e7942e9e4e2992b707683956a757 [2019-10-13 19:13:46,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:13:46,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:13:46,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:13:46,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:13:46,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:13:46,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:46,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a30decc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46, skipping insertion in model container [2019-10-13 19:13:46,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:46,406 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:13:46,442 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:13:46,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:13:46,878 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:13:46,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:13:46,986 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:13:46,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46 WrapperNode [2019-10-13 19:13:46,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:13:46,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:13:46,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:13:46,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:13:47,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (1/1) ... [2019-10-13 19:13:47,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:13:47,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:13:47,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:13:47,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:13:47,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (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 [2019-10-13 19:13:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-13 19:13:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2019-10-13 19:13:47,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:13:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:13:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 19:13:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 19:13:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 19:13:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 19:13:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 19:13:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 19:13:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 19:13:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 19:13:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 19:13:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 19:13:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 19:13:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 19:13:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 19:13:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:13:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:13:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 19:13:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:13:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 19:13:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 19:13:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 19:13:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 19:13:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 19:13:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 19:13:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 19:13:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 19:13:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 19:13:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-13 19:13:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:13:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:13:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:13:47,526 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 19:13:47,754 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:13:47,754 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:13:47,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:47 BoogieIcfgContainer [2019-10-13 19:13:47,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:13:47,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:13:47,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:13:47,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:13:47,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:46" (1/3) ... [2019-10-13 19:13:47,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2ae846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:47, skipping insertion in model container [2019-10-13 19:13:47,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:46" (2/3) ... [2019-10-13 19:13:47,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2ae846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:47, skipping insertion in model container [2019-10-13 19:13:47,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:47" (3/3) ... [2019-10-13 19:13:47,769 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all.i [2019-10-13 19:13:47,776 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:13:47,784 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:13:47,794 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:13:47,817 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:13:47,817 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:13:47,817 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:13:47,817 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:13:47,818 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:13:47,818 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:13:47,818 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:13:47,818 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:13:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-10-13 19:13:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:13:47,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:47,841 INFO L380 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] [2019-10-13 19:13:47,844 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash 430323869, now seen corresponding path program 1 times [2019-10-13 19:13:47,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:47,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281035036] [2019-10-13 19:13:47,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:47,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:47,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:13:48,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281035036] [2019-10-13 19:13:48,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:48,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:13:48,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655682503] [2019-10-13 19:13:48,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:13:48,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:13:48,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:13:48,259 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2019-10-13 19:13:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:48,468 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2019-10-13 19:13:48,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:13:48,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-13 19:13:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:48,480 INFO L225 Difference]: With dead ends: 65 [2019-10-13 19:13:48,480 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 19:13:48,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:13:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 19:13:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 19:13:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 19:13:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 19:13:48,529 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2019-10-13 19:13:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:48,531 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 19:13:48,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:13:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 19:13:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:13:48,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:48,534 INFO L380 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] [2019-10-13 19:13:48,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash 430145123, now seen corresponding path program 1 times [2019-10-13 19:13:48,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:48,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398374283] [2019-10-13 19:13:48,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:48,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:48,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:13:48,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398374283] [2019-10-13 19:13:48,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:48,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:13:48,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974372846] [2019-10-13 19:13:48,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:13:48,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:13:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:13:48,742 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2019-10-13 19:13:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:48,956 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2019-10-13 19:13:48,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:13:48,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-10-13 19:13:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:48,958 INFO L225 Difference]: With dead ends: 57 [2019-10-13 19:13:48,958 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 19:13:48,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:13:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 19:13:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-13 19:13:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 19:13:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-10-13 19:13:48,969 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2019-10-13 19:13:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:48,970 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-10-13 19:13:48,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:13:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-10-13 19:13:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 19:13:48,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:48,971 INFO L380 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] [2019-10-13 19:13:48,972 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -452541733, now seen corresponding path program 1 times [2019-10-13 19:13:48,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:48,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019817184] [2019-10-13 19:13:48,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:48,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:48,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:13:49,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019817184] [2019-10-13 19:13:49,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:49,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:13:49,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034838204] [2019-10-13 19:13:49,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:13:49,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:49,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:13:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:13:49,145 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2019-10-13 19:13:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:49,307 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2019-10-13 19:13:49,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:13:49,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-13 19:13:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:49,311 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:13:49,312 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 19:13:49,314 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:13:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 19:13:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-10-13 19:13:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-13 19:13:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-13 19:13:49,332 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 32 [2019-10-13 19:13:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:49,333 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-13 19:13:49,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:13:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-13 19:13:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 19:13:49,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:49,335 INFO L380 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] [2019-10-13 19:13:49,335 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1201021362, now seen corresponding path program 1 times [2019-10-13 19:13:49,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:49,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830365066] [2019-10-13 19:13:49,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:49,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:49,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:13:49,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830365066] [2019-10-13 19:13:49,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:49,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:13:49,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499713725] [2019-10-13 19:13:49,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:13:49,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:13:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:13:49,566 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 9 states. [2019-10-13 19:13:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:49,964 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2019-10-13 19:13:49,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:13:49,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2019-10-13 19:13:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:49,968 INFO L225 Difference]: With dead ends: 52 [2019-10-13 19:13:49,969 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 19:13:49,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:13:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 19:13:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2019-10-13 19:13:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 19:13:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-13 19:13:49,984 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2019-10-13 19:13:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:49,984 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-13 19:13:49,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:13:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-13 19:13:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 19:13:49,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:49,988 INFO L380 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, 1, 1] [2019-10-13 19:13:49,989 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:49,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1388528326, now seen corresponding path program 1 times [2019-10-13 19:13:49,990 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:49,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016392962] [2019-10-13 19:13:49,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:49,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:49,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:13:50,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016392962] [2019-10-13 19:13:50,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:50,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:13:50,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542102476] [2019-10-13 19:13:50,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:13:50,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:13:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:13:50,376 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 8 states. [2019-10-13 19:13:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:50,705 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-10-13 19:13:50,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:13:50,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-10-13 19:13:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:50,706 INFO L225 Difference]: With dead ends: 61 [2019-10-13 19:13:50,707 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 19:13:50,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:13:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 19:13:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-13 19:13:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 19:13:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-10-13 19:13:50,716 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2019-10-13 19:13:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:50,717 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-10-13 19:13:50,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:13:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-10-13 19:13:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 19:13:50,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:50,718 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:13:50,719 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:50,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash -89881461, now seen corresponding path program 1 times [2019-10-13 19:13:50,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:50,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491435394] [2019-10-13 19:13:50,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:50,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:50,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:13:50,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491435394] [2019-10-13 19:13:50,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787544970] [2019-10-13 19:13:50,884 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 [2019-10-13 19:13:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:13:51,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:13:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:13:51,111 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:13:51,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2019-10-13 19:13:51,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979127793] [2019-10-13 19:13:51,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:13:51,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:51,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:13:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:13:51,113 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 10 states. [2019-10-13 19:13:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:51,321 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-10-13 19:13:51,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:13:51,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2019-10-13 19:13:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:51,323 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:13:51,323 INFO L226 Difference]: Without dead ends: 52 [2019-10-13 19:13:51,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:13:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-13 19:13:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2019-10-13 19:13:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-13 19:13:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-10-13 19:13:51,340 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 44 [2019-10-13 19:13:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:51,341 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-10-13 19:13:51,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:13:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-10-13 19:13:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:13:51,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:51,345 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-10-13 19:13:51,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:13:51,554 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:51,554 INFO L82 PathProgramCache]: Analyzing trace with hash -938275970, now seen corresponding path program 1 times [2019-10-13 19:13:51,555 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:51,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204140341] [2019-10-13 19:13:51,555 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:51,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:51,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:13:52,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204140341] [2019-10-13 19:13:52,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618905509] [2019-10-13 19:13:52,026 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 [2019-10-13 19:13:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:52,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 61 conjunts are in the unsatisfiable core [2019-10-13 19:13:52,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:13:52,340 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 [2019-10-13 19:13:52,341 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,345 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,346 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,346 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-13 19:13:52,426 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,427 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 [2019-10-13 19:13:52,428 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,436 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,436 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-10-13 19:13:52,447 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 [2019-10-13 19:13:52,447 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,452 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,453 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,453 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:12 [2019-10-13 19:13:52,545 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,546 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-10-13 19:13:52,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:13:52,551 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:13:52,558 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:52,560 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 19:13:52,560 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:20 [2019-10-13 19:13:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:13:52,889 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:13:52,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2019-10-13 19:13:52,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538985312] [2019-10-13 19:13:52,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 19:13:52,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:52,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 19:13:52,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:13:52,893 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 26 states. [2019-10-13 19:13:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:53,573 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2019-10-13 19:13:53,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:13:53,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 51 [2019-10-13 19:13:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:53,575 INFO L225 Difference]: With dead ends: 75 [2019-10-13 19:13:53,576 INFO L226 Difference]: Without dead ends: 55 [2019-10-13 19:13:53,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2019-10-13 19:13:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-13 19:13:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-10-13 19:13:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 19:13:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2019-10-13 19:13:53,586 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2019-10-13 19:13:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:53,587 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2019-10-13 19:13:53,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 19:13:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2019-10-13 19:13:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:13:53,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:53,589 INFO L380 BasicCegarLoop]: trace histogram [4, 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] [2019-10-13 19:13:53,792 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:13:53,793 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1321025083, now seen corresponding path program 2 times [2019-10-13 19:13:53,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:53,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339964481] [2019-10-13 19:13:53,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:53,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:53,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:54,573 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-10-13 19:13:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:13:54,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339964481] [2019-10-13 19:13:54,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447738710] [2019-10-13 19:13:54,977 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:13:55,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-13 19:13:55,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:13:55,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-13 19:13:55,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:13:55,356 INFO L341 Elim1Store]: treesize reduction 106, result has 24.8 percent of original size [2019-10-13 19:13:55,357 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 271 treesize of output 142 [2019-10-13 19:13:55,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:13:55,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:13:55,362 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 19:13:55,384 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:55,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:13:55,587 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 19:13:55,593 INFO L168 Benchmark]: Toolchain (without parser) took 9203.84 ms. Allocated memory was 138.9 MB in the beginning and 309.3 MB in the end (delta: 170.4 MB). Free memory was 101.7 MB in the beginning and 143.9 MB in the end (delta: -42.2 MB). Peak memory consumption was 128.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,594 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.32 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.3 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,599 INFO L168 Benchmark]: Boogie Preprocessor took 63.59 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,600 INFO L168 Benchmark]: RCFGBuilder took 704.41 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 118.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,600 INFO L168 Benchmark]: TraceAbstraction took 7834.02 ms. Allocated memory was 202.4 MB in the beginning and 309.3 MB in the end (delta: 107.0 MB). Free memory was 117.7 MB in the beginning and 143.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:13:55,613 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 597.32 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.3 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.59 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.41 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 118.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7834.02 ms. Allocated memory was 202.4 MB in the beginning and 309.3 MB in the end (delta: 107.0 MB). Free memory was 117.7 MB in the beginning and 143.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...