/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:51,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:51,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:51,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:51,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:51,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:51,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:51,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:51,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:51,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:51,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:51,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:51,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:51,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:51,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:51,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:51,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:51,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:51,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:51,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:51,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:51,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:51,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:51,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:51,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:51,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:51,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:51,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:51,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:51,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:51,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:51,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:51,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:51,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:51,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:51,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:51,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:51,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:51,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:51,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:51,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:51,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:51,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:51,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:51,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:51,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:51,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:51,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:51,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:51,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:51,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:51,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:51,349 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:51,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:51,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:51,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:51,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:51,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:51,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:51,350 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:51,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:51,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:51,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:51,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:51,679 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:51,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-07 13:25:51,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b45ea147/97b3b7468d9c43f1bb8ba6e742599498/FLAGf239d5f46 [2020-07-07 13:25:52,273 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:52,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-07 13:25:52,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b45ea147/97b3b7468d9c43f1bb8ba6e742599498/FLAGf239d5f46 [2020-07-07 13:25:52,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b45ea147/97b3b7468d9c43f1bb8ba6e742599498 [2020-07-07 13:25:52,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:52,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:52,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:52,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:52,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:52,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:52" (1/1) ... [2020-07-07 13:25:52,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fc76d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:52, skipping insertion in model container [2020-07-07 13:25:52,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:52" (1/1) ... [2020-07-07 13:25:52,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:52,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:53,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:53,134 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:53,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:53,256 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:53,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53 WrapperNode [2020-07-07 13:25:53,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:53,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:53,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:53,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:53,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (1/1) ... [2020-07-07 13:25:53,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:53,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:53,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:53,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:53,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (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 [2020-07-07 13:25:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-07-07 13:25:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-07-07 13:25:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-07-07 13:25:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:53,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-07-07 13:25:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-07-07 13:25:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:25:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:25:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:53,749 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:25:54,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:54,087 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:25:54,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:54 BoogieIcfgContainer [2020-07-07 13:25:54,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:54,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:54,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:54,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:54,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:52" (1/3) ... [2020-07-07 13:25:54,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507754f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:54, skipping insertion in model container [2020-07-07 13:25:54,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:53" (2/3) ... [2020-07-07 13:25:54,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507754f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:54, skipping insertion in model container [2020-07-07 13:25:54,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:54" (3/3) ... [2020-07-07 13:25:54,102 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-07-07 13:25:54,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:54,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:25:54,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:25:54,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:54,158 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:54,158 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:54,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:54,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:54,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:54,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:54,159 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-07-07 13:25:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 13:25:54,190 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:54,191 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:54,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-07-07 13:25:54,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:54,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792963231] [2020-07-07 13:25:54,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-07 13:25:54,499 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:54,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792963231] [2020-07-07 13:25:54,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:54,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:54,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195444730] [2020-07-07 13:25:54,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:54,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:54,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:54,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:54,556 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-07-07 13:25:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:54,904 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-07-07 13:25:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:54,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-07-07 13:25:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:54,922 INFO L225 Difference]: With dead ends: 289 [2020-07-07 13:25:54,922 INFO L226 Difference]: Without dead ends: 123 [2020-07-07 13:25:54,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-07 13:25:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-07-07 13:25:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-07 13:25:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-07-07 13:25:55,015 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-07-07 13:25:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:55,016 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-07-07 13:25:55,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-07-07 13:25:55,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-07 13:25:55,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:55,024 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:55,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:55,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:55,026 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-07-07 13:25:55,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:55,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115093633] [2020-07-07 13:25:55,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 13:25:55,454 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:55,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115093633] [2020-07-07 13:25:55,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:55,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:25:55,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082465709] [2020-07-07 13:25:55,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:25:55,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:55,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:25:55,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:25:55,461 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 10 states. [2020-07-07 13:25:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:56,437 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2020-07-07 13:25:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:25:56,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-07-07 13:25:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:56,441 INFO L225 Difference]: With dead ends: 275 [2020-07-07 13:25:56,441 INFO L226 Difference]: Without dead ends: 169 [2020-07-07 13:25:56,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-07-07 13:25:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-07 13:25:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-07-07 13:25:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-07 13:25:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-07-07 13:25:56,470 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 69 [2020-07-07 13:25:56,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:56,471 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-07-07 13:25:56,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:25:56,471 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-07-07 13:25:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-07 13:25:56,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:56,474 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:56,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:56,475 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-07-07 13:25:56,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:56,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554115061] [2020-07-07 13:25:56,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:56,758 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:56,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554115061] [2020-07-07 13:25:56,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:56,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:25:56,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463188203] [2020-07-07 13:25:56,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:25:56,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:56,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:25:56,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:56,761 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 12 states. [2020-07-07 13:25:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:57,858 INFO L93 Difference]: Finished difference Result 313 states and 348 transitions. [2020-07-07 13:25:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 13:25:57,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-07-07 13:25:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:57,866 INFO L225 Difference]: With dead ends: 313 [2020-07-07 13:25:57,867 INFO L226 Difference]: Without dead ends: 206 [2020-07-07 13:25:57,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-07-07 13:25:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-07 13:25:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 154. [2020-07-07 13:25:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-07 13:25:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions. [2020-07-07 13:25:57,915 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 71 [2020-07-07 13:25:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:57,916 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 167 transitions. [2020-07-07 13:25:57,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:25:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2020-07-07 13:25:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-07 13:25:57,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:57,924 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:57,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:57,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:57,925 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-07-07 13:25:57,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:57,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013397437] [2020-07-07 13:25:57,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:58,265 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:58,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013397437] [2020-07-07 13:25:58,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:58,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:25:58,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973613741] [2020-07-07 13:25:58,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:25:58,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:25:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:58,267 INFO L87 Difference]: Start difference. First operand 154 states and 167 transitions. Second operand 11 states. [2020-07-07 13:25:59,345 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-07 13:25:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:59,870 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2020-07-07 13:25:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 13:25:59,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-07-07 13:25:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:59,873 INFO L225 Difference]: With dead ends: 342 [2020-07-07 13:25:59,873 INFO L226 Difference]: Without dead ends: 204 [2020-07-07 13:25:59,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2020-07-07 13:25:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-07-07 13:25:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 161. [2020-07-07 13:25:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-07 13:25:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2020-07-07 13:25:59,929 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 79 [2020-07-07 13:25:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:59,930 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2020-07-07 13:25:59,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:25:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2020-07-07 13:25:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-07 13:25:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:59,937 INFO L422 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, 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] [2020-07-07 13:25:59,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:59,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1820928426, now seen corresponding path program 1 times [2020-07-07 13:25:59,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:59,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666669529] [2020-07-07 13:25:59,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:26:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:26:00,265 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:26:00,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666669529] [2020-07-07 13:26:00,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:26:00,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:26:00,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829442889] [2020-07-07 13:26:00,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 13:26:00,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:26:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 13:26:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:26:00,268 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand 15 states. [2020-07-07 13:26:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:26:01,427 INFO L93 Difference]: Finished difference Result 307 states and 339 transitions. [2020-07-07 13:26:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 13:26:01,428 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-07-07 13:26:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:26:01,430 INFO L225 Difference]: With dead ends: 307 [2020-07-07 13:26:01,430 INFO L226 Difference]: Without dead ends: 221 [2020-07-07 13:26:01,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:26:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-07 13:26:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2020-07-07 13:26:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-07 13:26:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 184 transitions. [2020-07-07 13:26:01,456 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 184 transitions. Word has length 80 [2020-07-07 13:26:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:26:01,456 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 184 transitions. [2020-07-07 13:26:01,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 13:26:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 184 transitions. [2020-07-07 13:26:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-07 13:26:01,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:26:01,458 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 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] [2020-07-07 13:26:01,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:26:01,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:26:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:26:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-07-07 13:26:01,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:26:01,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594741721] [2020-07-07 13:26:01,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:26:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:26:01,714 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:26:01,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594741721] [2020-07-07 13:26:01,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:26:01,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:26:01,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761290561] [2020-07-07 13:26:01,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:26:01,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:26:01,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:26:01,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:26:01,716 INFO L87 Difference]: Start difference. First operand 170 states and 184 transitions. Second operand 14 states. [2020-07-07 13:26:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:26:03,203 INFO L93 Difference]: Finished difference Result 306 states and 337 transitions. [2020-07-07 13:26:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:26:03,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-07-07 13:26:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:26:03,206 INFO L225 Difference]: With dead ends: 306 [2020-07-07 13:26:03,206 INFO L226 Difference]: Without dead ends: 216 [2020-07-07 13:26:03,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:26:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-07-07 13:26:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 170. [2020-07-07 13:26:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-07 13:26:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2020-07-07 13:26:03,239 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 81 [2020-07-07 13:26:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:26:03,239 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2020-07-07 13:26:03,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:26:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2020-07-07 13:26:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 13:26:03,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:26:03,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:26:03,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:26:03,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:26:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:26:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash -574415326, now seen corresponding path program 2 times [2020-07-07 13:26:03,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:26:03,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517590378] [2020-07-07 13:26:03,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:26:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:26:03,475 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:26:03,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517590378] [2020-07-07 13:26:03,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:26:03,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 13:26:03,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817085217] [2020-07-07 13:26:03,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 13:26:03,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:26:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 13:26:03,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:26:03,477 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand 13 states. [2020-07-07 13:26:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:26:04,183 INFO L93 Difference]: Finished difference Result 207 states and 225 transitions. [2020-07-07 13:26:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:26:04,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-07-07 13:26:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:26:04,186 INFO L225 Difference]: With dead ends: 207 [2020-07-07 13:26:04,187 INFO L226 Difference]: Without dead ends: 201 [2020-07-07 13:26:04,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-07-07 13:26:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-07 13:26:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 183. [2020-07-07 13:26:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-07 13:26:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2020-07-07 13:26:04,210 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 89 [2020-07-07 13:26:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:26:04,211 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2020-07-07 13:26:04,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 13:26:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2020-07-07 13:26:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-07 13:26:04,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:26:04,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2020-07-07 13:26:04,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:26:04,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:26:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:26:04,214 INFO L82 PathProgramCache]: Analyzing trace with hash 263120297, now seen corresponding path program 1 times [2020-07-07 13:26:04,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:26:04,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933228784] [2020-07-07 13:26:04,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:26:04,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:26:04,242 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) 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:317) 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) [2020-07-07 13:26:04,248 INFO L168 Benchmark]: Toolchain (without parser) took 11632.64 ms. Allocated memory was 134.2 MB in the beginning and 393.2 MB in the end (delta: 259.0 MB). Free memory was 97.5 MB in the beginning and 277.4 MB in the end (delta: -179.8 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,249 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 134.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.03 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 97.3 MB in the beginning and 164.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,250 INFO L168 Benchmark]: Boogie Preprocessor took 65.92 ms. Allocated memory is still 199.8 MB. Free memory was 163.7 MB in the beginning and 160.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,251 INFO L168 Benchmark]: RCFGBuilder took 768.15 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 103.5 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,252 INFO L168 Benchmark]: TraceAbstraction took 10152.02 ms. Allocated memory was 199.8 MB in the beginning and 393.2 MB in the end (delta: 193.5 MB). Free memory was 103.5 MB in the beginning and 277.4 MB in the end (delta: -173.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:26:04,256 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 134.2 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.03 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 97.3 MB in the beginning and 164.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.92 ms. Allocated memory is still 199.8 MB. Free memory was 163.7 MB in the beginning and 160.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 768.15 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 103.5 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10152.02 ms. Allocated memory was 199.8 MB in the beginning and 393.2 MB in the end (delta: 193.5 MB). Free memory was 103.5 MB in the beginning and 277.4 MB in the end (delta: -173.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...