/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 --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:32:50,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:32:50,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:32:50,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:32:50,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:32:50,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:32:50,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:32:50,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:32:50,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:32:50,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:32:50,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:32:50,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:32:50,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:32:50,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:32:50,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:32:50,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:32:50,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:32:50,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:32:50,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:32:50,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:32:50,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:32:50,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:32:50,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:32:50,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:32:50,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:32:50,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:32:50,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:32:50,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:32:50,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:32:50,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:32:50,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:32:50,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:32:50,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:32:50,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:32:50,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:32:50,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:32:50,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:32:50,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:32:50,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:32:50,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:32:50,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:32:50,380 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 [2020-07-19 21:32:50,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:32:50,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:32:50,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:32:50,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:32:50,408 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:32:50,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:32:50,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:32:50,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:32:50,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:32:50,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:32:50,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:32:50,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:32:50,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:32:50,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:32:50,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:32:50,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:32:50,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:32:50,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:32:50,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:32:50,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:32:50,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:32:50,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:32:50,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:32:50,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:32:50,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:32:50,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:32:50,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:32:50,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:32:50,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:32:50,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:32:50,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:32:50,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:32:50,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:32:50,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:32:50,726 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:32:50,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-19 21:32:50,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06870b444/f5063c3242b14057ab35eb54cf8ff3f5/FLAG8b94a34dd [2020-07-19 21:32:51,372 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:32:51,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-19 21:32:51,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06870b444/f5063c3242b14057ab35eb54cf8ff3f5/FLAG8b94a34dd [2020-07-19 21:32:51,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06870b444/f5063c3242b14057ab35eb54cf8ff3f5 [2020-07-19 21:32:51,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:32:51,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:32:51,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:32:51,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:32:51,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:32:51,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:51" (1/1) ... [2020-07-19 21:32:51,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552faa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:51, skipping insertion in model container [2020-07-19 21:32:51,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:51" (1/1) ... [2020-07-19 21:32:51,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:32:51,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:32:52,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:32:52,265 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:32:52,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:32:52,384 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:32:52,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52 WrapperNode [2020-07-19 21:32:52,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:32:52,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:32:52,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:32:52,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:32:52,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (1/1) ... [2020-07-19 21:32:52,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:32:52,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:32:52,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:32:52,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:32:52,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (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 [2020-07-19 21:32:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:32:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:32:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:32:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 21:32:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 21:32:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 21:32:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 21:32:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 21:32:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 21:32:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 21:32:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 21:32:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 21:32:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 21:32:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 21:32:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 21:32:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 21:32:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 21:32:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 21:32:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 21:32:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 21:32:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 21:32:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 21:32:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 21:32:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 21:32:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 21:32:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 21:32:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 21:32:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 21:32:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 21:32:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 21:32:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 21:32:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 21:32:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 21:32:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 21:32:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 21:32:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 21:32:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 21:32:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 21:32:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 21:32:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 21:32:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 21:32:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 21:32:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 21:32:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 21:32:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:32:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:32:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:32:53,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:32:53,107 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-19 21:32:53,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:53 BoogieIcfgContainer [2020-07-19 21:32:53,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:32:53,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:32:53,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:32:53,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:32:53,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:32:51" (1/3) ... [2020-07-19 21:32:53,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d22dac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:53, skipping insertion in model container [2020-07-19 21:32:53,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:52" (2/3) ... [2020-07-19 21:32:53,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d22dac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:53, skipping insertion in model container [2020-07-19 21:32:53,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:53" (3/3) ... [2020-07-19 21:32:53,119 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-19 21:32:53,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:32:53,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-19 21:32:53,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-19 21:32:53,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:32:53,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:32:53,176 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:32:53,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:32:53,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:32:53,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:32:53,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:32:53,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:32:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-19 21:32:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 21:32:53,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:53,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:53,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:32:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-19 21:32:53,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:53,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321936311] [2020-07-19 21:32:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:32:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:53,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321936311] [2020-07-19 21:32:53,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:32:53,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26347915] [2020-07-19 21:32:53,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:32:53,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:53,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:32:53,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:32:53,435 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-07-19 21:32:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:53,575 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-07-19 21:32:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:32:53,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-19 21:32:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:53,589 INFO L225 Difference]: With dead ends: 67 [2020-07-19 21:32:53,589 INFO L226 Difference]: Without dead ends: 31 [2020-07-19 21:32:53,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:32:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-19 21:32:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-19 21:32:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 21:32:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-19 21:32:53,656 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-07-19 21:32:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:53,657 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-19 21:32:53,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:32:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-19 21:32:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 21:32:53,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:53,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:53,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:32:53,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:32:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-07-19 21:32:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:53,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723056608] [2020-07-19 21:32:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:32:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:53,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723056608] [2020-07-19 21:32:53,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:53,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:53,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246099824] [2020-07-19 21:32:53,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:53,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:53,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:53,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:53,781 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-07-19 21:32:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:53,908 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-19 21:32:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:32:53,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-19 21:32:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:53,910 INFO L225 Difference]: With dead ends: 37 [2020-07-19 21:32:53,910 INFO L226 Difference]: Without dead ends: 35 [2020-07-19 21:32:53,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:32:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-19 21:32:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-19 21:32:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:32:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-19 21:32:53,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-07-19 21:32:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:53,918 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-19 21:32:53,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-19 21:32:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:32:53,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:53,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:53,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:32:53,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:32:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-19 21:32:53,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:53,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894826173] [2020-07-19 21:32:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:32:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:54,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894826173] [2020-07-19 21:32:54,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:54,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:32:54,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206704553] [2020-07-19 21:32:54,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:32:54,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:32:54,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:32:54,068 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-07-19 21:32:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:54,232 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-19 21:32:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:32:54,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-19 21:32:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:54,234 INFO L225 Difference]: With dead ends: 54 [2020-07-19 21:32:54,234 INFO L226 Difference]: Without dead ends: 52 [2020-07-19 21:32:54,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:32:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-19 21:32:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-19 21:32:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-19 21:32:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-19 21:32:54,243 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-19 21:32:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:54,243 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-19 21:32:54,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:32:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-19 21:32:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:32:54,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:54,245 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:54,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:32:54,245 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:32:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-19 21:32:54,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:54,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372476257] [2020-07-19 21:32:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:32:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:54,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372476257] [2020-07-19 21:32:54,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127693294] [2020-07-19 21:32:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 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 [2020-07-19 21:32:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:54,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-19 21:32:54,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:32:54,785 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-19 21:32:54,786 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-19 21:32:54,787 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:54,801 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:54,807 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-19 21:32:54,808 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:54,820 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:54,821 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:32:54,822 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-19 21:32:54,896 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:54,896 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-19 21:32:54,898 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:54,967 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-19 21:32:54,974 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:32:54,990 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:32:54,997 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-19 21:32:54,998 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,013 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,014 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,015 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-19 21:32:55,111 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,112 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-19 21:32:55,114 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,144 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,147 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|, |v_#memory_int_30|], 4=[|v_#memory_int_32|]} [2020-07-19 21:32:55,152 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:32:55,173 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,176 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:32:55,192 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:32:55,216 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-19 21:32:55,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-19 21:32:55,217 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,239 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,243 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-19 21:32:55,243 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-19 21:32:55,343 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-07-19 21:32:55,344 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,356 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:32:55,357 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:32:55,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-19 21:32:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:55,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:32:55,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-19 21:32:55,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245720074] [2020-07-19 21:32:55,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 21:32:55,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:55,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 21:32:55,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-07-19 21:32:55,366 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 12 states. [2020-07-19 21:33:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:33:02,233 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-19 21:33:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 21:33:02,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-19 21:33:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:33:02,236 INFO L225 Difference]: With dead ends: 62 [2020-07-19 21:33:02,236 INFO L226 Difference]: Without dead ends: 60 [2020-07-19 21:33:02,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-07-19 21:33:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-19 21:33:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-19 21:33:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-19 21:33:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-19 21:33:02,245 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-19 21:33:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:33:02,245 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-19 21:33:02,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 21:33:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-19 21:33:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:33:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:33:02,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:33:02,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:33:02,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:33:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:33:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-19 21:33:02,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:33:02,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283078540] [2020-07-19 21:33:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:33:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:02,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283078540] [2020-07-19 21:33:02,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:33:02,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:33:02,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580859395] [2020-07-19 21:33:02,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:33:02,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:33:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:33:02,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:33:02,561 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-07-19 21:33:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:33:02,687 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-19 21:33:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:33:02,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-19 21:33:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:33:02,688 INFO L225 Difference]: With dead ends: 42 [2020-07-19 21:33:02,688 INFO L226 Difference]: Without dead ends: 30 [2020-07-19 21:33:02,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:33:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-19 21:33:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-19 21:33:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:33:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-19 21:33:02,702 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-19 21:33:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:33:02,704 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-19 21:33:02,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:33:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-19 21:33:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:33:02,705 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:33:02,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:33:02,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:33:02,706 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:33:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:33:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-19 21:33:02,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:33:02,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006307683] [2020-07-19 21:33:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:33:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006307683] [2020-07-19 21:33:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665457021] [2020-07-19 21:33:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 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 [2020-07-19 21:33:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:02,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-19 21:33:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:33:02,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:02,985 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-19 21:33:02,986 INFO L384 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 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-19 21:33:02,987 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,041 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-19 21:33:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:03,109 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-19 21:33:03,109 INFO L384 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 1 case distinctions, treesize of input 38 treesize of output 48 [2020-07-19 21:33:03,110 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,170 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-19 21:33:03,171 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,172 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-19 21:33:03,274 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-19 21:33:03,278 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-19 21:33:03,287 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-19 21:33:03,288 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,318 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:03,319 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-19 21:33:03,320 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,331 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-19 21:33:03,332 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,382 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-19 21:33:03,391 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-19 21:33:03,392 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,400 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:03,401 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-19 21:33:03,402 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,406 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-19 21:33:03,406 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,417 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-19 21:33:03,417 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:03,418 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-19 21:33:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:03,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:33:03,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-19 21:33:03,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786544774] [2020-07-19 21:33:03,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 21:33:03,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:33:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 21:33:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-19 21:33:03,442 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-07-19 21:33:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:33:03,952 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-19 21:33:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 21:33:03,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-19 21:33:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:33:03,954 INFO L225 Difference]: With dead ends: 57 [2020-07-19 21:33:03,954 INFO L226 Difference]: Without dead ends: 35 [2020-07-19 21:33:03,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-07-19 21:33:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-19 21:33:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-19 21:33:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 21:33:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-19 21:33:03,965 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-19 21:33:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:33:03,965 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-19 21:33:03,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 21:33:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-19 21:33:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 21:33:03,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:33:03,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:33:04,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:33:04,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:33:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:33:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-19 21:33:04,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:33:04,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597210395] [2020-07-19 21:33:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:33:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:04,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597210395] [2020-07-19 21:33:04,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562950487] [2020-07-19 21:33:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 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 [2020-07-19 21:33:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:04,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-19 21:33:04,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:33:04,640 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-19 21:33:04,641 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-19 21:33:04,642 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,669 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:04,670 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,670 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:23 [2020-07-19 21:33:04,746 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-19 21:33:04,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-19 21:33:04,748 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,820 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.7 percent of original size [2020-07-19 21:33:04,828 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-19 21:33:04,829 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,879 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.6 percent of original size [2020-07-19 21:33:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:04,884 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-19 21:33:04,884 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,911 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:04,911 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:04,912 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:57 [2020-07-19 21:33:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:05,102 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,103 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-07-19 21:33:05,104 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,214 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-19 21:33:05,215 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,217 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|, |v_#memory_int_35|], 2=[|v_#memory_int_34|], 4=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.base_27|, |v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.offset_27|]} [2020-07-19 21:33:05,221 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,338 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-19 21:33:05,340 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2020-07-19 21:33:05,354 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,439 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,448 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2020-07-19 21:33:05,448 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,518 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,527 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:33:05,587 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,704 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-07-19 21:33:05,704 INFO L350 Elim1Store]: treesize reduction 124, result has 41.2 percent of original size [2020-07-19 21:33:05,705 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 161 [2020-07-19 21:33:05,709 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-07-19 21:33:05,710 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-19 21:33:05,712 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,804 INFO L624 ElimStorePlain]: treesize reduction 82, result has 65.5 percent of original size [2020-07-19 21:33:05,808 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:33:05,840 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:05,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 21:33:05,858 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2020-07-19 21:33:05,859 INFO L544 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:05,889 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:05,891 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 7 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:33:05,892 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 11 variables, input treesize:272, output treesize:89 [2020-07-19 21:33:06,019 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-07-19 21:33:06,020 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:06,047 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:06,049 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-19 21:33:06,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:74 [2020-07-19 21:33:06,771 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:06,771 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2020-07-19 21:33:06,773 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-19 21:33:06,774 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-19 21:33:06,775 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-19 21:33:06,776 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:06,795 INFO L624 ElimStorePlain]: treesize reduction 36, result has 20.0 percent of original size [2020-07-19 21:33:06,795 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:06,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:4 [2020-07-19 21:33:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:06,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:33:06,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2020-07-19 21:33:06,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035194892] [2020-07-19 21:33:06,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 21:33:06,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:33:06,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 21:33:06,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=175, Unknown=1, NotChecked=0, Total=210 [2020-07-19 21:33:06,805 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 15 states. [2020-07-19 21:33:07,313 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-07-19 21:33:07,654 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-07-19 21:33:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:33:08,438 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-07-19 21:33:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-19 21:33:08,438 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-07-19 21:33:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:33:08,439 INFO L225 Difference]: With dead ends: 121 [2020-07-19 21:33:08,439 INFO L226 Difference]: Without dead ends: 119 [2020-07-19 21:33:08,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=171, Invalid=758, Unknown=1, NotChecked=0, Total=930 [2020-07-19 21:33:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-19 21:33:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 49. [2020-07-19 21:33:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-19 21:33:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-07-19 21:33:08,454 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 24 [2020-07-19 21:33:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:33:08,455 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-07-19 21:33:08,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 21:33:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-07-19 21:33:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 21:33:08,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:33:08,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:33:08,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:33:08,671 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:33:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:33:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-07-19 21:33:08,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:33:08,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485505627] [2020-07-19 21:33:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:33:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:08,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485505627] [2020-07-19 21:33:08,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323903873] [2020-07-19 21:33:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:33:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:33:09,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-19 21:33:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:33:09,062 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-19 21:33:09,062 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-19 21:33:09,063 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,072 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,073 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 21:33:09,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-07-19 21:33:09,125 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,126 INFO L384 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 [2020-07-19 21:33:09,127 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:33:09,127 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,141 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,147 INFO L384 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 27 treesize of output 15 [2020-07-19 21:33:09,148 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,158 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,162 INFO L384 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 27 treesize of output 15 [2020-07-19 21:33:09,162 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,172 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,173 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,173 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-07-19 21:33:09,202 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_36|], 2=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|]} [2020-07-19 21:33:09,206 INFO L384 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 25 treesize of output 17 [2020-07-19 21:33:09,206 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,218 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,222 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2020-07-19 21:33:09,224 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,231 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,252 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,253 INFO L384 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 65 treesize of output 97 [2020-07-19 21:33:09,254 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-07-19 21:33:09,255 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-19 21:33:09,255 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,266 INFO L624 ElimStorePlain]: treesize reduction 40, result has 39.4 percent of original size [2020-07-19 21:33:09,266 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,267 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-07-19 21:33:09,323 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2020-07-19 21:33:09,324 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,330 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,337 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2020-07-19 21:33:09,338 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,341 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,342 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,342 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-07-19 21:33:09,383 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-19 21:33:09,384 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,389 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 21:33:09,389 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 21:33:09,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-19 21:33:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:33:09,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:33:09,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-07-19 21:33:09,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931636733] [2020-07-19 21:33:09,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-19 21:33:09,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:33:09,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-19 21:33:09,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-07-19 21:33:09,419 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 19 states. [2020-07-19 21:33:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:33:10,194 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-07-19 21:33:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 21:33:10,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-07-19 21:33:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:33:10,198 INFO L225 Difference]: With dead ends: 85 [2020-07-19 21:33:10,198 INFO L226 Difference]: Without dead ends: 73 [2020-07-19 21:33:10,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-07-19 21:33:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-19 21:33:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2020-07-19 21:33:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-19 21:33:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-07-19 21:33:10,225 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 24 [2020-07-19 21:33:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:33:10,225 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-07-19 21:33:10,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-19 21:33:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-07-19 21:33:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:33:10,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:33:10,229 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-19 21:33:10,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:33:10,444 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:33:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:33:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-07-19 21:33:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:33:10,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849908937] [2020-07-19 21:33:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19ea7e48 [2020-07-19 21:33:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:33:10,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:33:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:33:10,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:33:10,524 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:33:10,524 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:33:10,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 21:33:10,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:33:10 BoogieIcfgContainer [2020-07-19 21:33:10,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:33:10,566 INFO L168 Benchmark]: Toolchain (without parser) took 18903.44 ms. Allocated memory was 146.3 MB in the beginning and 322.4 MB in the end (delta: 176.2 MB). Free memory was 102.7 MB in the beginning and 162.3 MB in the end (delta: -59.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,566 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.03 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 171.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,567 INFO L168 Benchmark]: Boogie Preprocessor took 65.38 ms. Allocated memory is still 203.9 MB. Free memory was 171.7 MB in the beginning and 168.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,568 INFO L168 Benchmark]: RCFGBuilder took 658.53 ms. Allocated memory is still 203.9 MB. Free memory was 168.3 MB in the beginning and 121.2 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,568 INFO L168 Benchmark]: TraceAbstraction took 17452.14 ms. Allocated memory was 203.9 MB in the beginning and 322.4 MB in the end (delta: 118.5 MB). Free memory was 120.5 MB in the beginning and 162.3 MB in the end (delta: -41.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:33:10,570 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.03 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 171.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.38 ms. Allocated memory is still 203.9 MB. Free memory was 171.7 MB in the beginning and 168.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 658.53 ms. Allocated memory is still 203.9 MB. Free memory was 168.3 MB in the beginning and 121.2 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17452.14 ms. Allocated memory was 203.9 MB in the beginning and 322.4 MB in the end (delta: 118.5 MB). Free memory was 120.5 MB in the beginning and 162.3 MB in the end (delta: -41.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1039]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* null = malloc(sizeof(SLL)); [L995] null->colour = BLACK [L996] null->next = ((void*)0) [L998] SLL* list = malloc(sizeof(SLL)); [L999] list->next = null [L1000] list->colour = BLACK [L1002] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, null={-2:0}] [L1005] COND TRUE __VERIFIER_nondet_int() [L1008] end->next = malloc(sizeof(SLL)) [L1009] EXPR end->next [L1009] end = end->next [L1010] end->next = null [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1018] end->colour = RED [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1022] end->colour = BLACK VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1031] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1035] COND FALSE !(RED == end->colour) [L1042] EXPR end->next [L1042] end = end->next [L1033] COND TRUE null != end [L1035] EXPR end->colour VAL [end={-3:0}, end->colour=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1035] COND TRUE RED == end->colour [L1037] EXPR end->next [L1037] end = end->next [L1038] COND FALSE !(!(null != end)) VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1039] EXPR end->colour VAL [end={-4:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] [L1039] COND TRUE !(BLACK != end->colour) [L1039] __VERIFIER_error() VAL [end={-4:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-4:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-3:0}, null={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 436 SDslu, 956 SDs, 0 SdLazy, 1176 SolverSat, 169 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 213 ConstructedInterpolants, 19 QuantifiedInterpolants, 87609 SizeOfPredicates, 54 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...