/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:20:13,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:20:13,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:20:13,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:20:13,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:20:13,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:20:13,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:20:13,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:20:13,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:20:13,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:20:13,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:20:13,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:20:13,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:20:13,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:20:13,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:20:13,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:20:13,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:20:13,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:20:13,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:20:13,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:20:13,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:20:13,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:20:13,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:20:13,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:20:13,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:20:13,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:20:13,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:20:13,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:20:13,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:20:13,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:20:13,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:20:13,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:20:13,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:20:13,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:20:13,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:20:13,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:20:13,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:20:13,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:20:13,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:20:13,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:20:13,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:20:13,435 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 [2020-07-07 11:20:13,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:20:13,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:20:13,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:20:13,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:20:13,450 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:20:13,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:20:13,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:20:13,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:20:13,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:20:13,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:20:13,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:20:13,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:20:13,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:20:13,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:20:13,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:20:13,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:20:13,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:20:13,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:20:13,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:20:13,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:20:13,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:20:13,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:20:13,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:20:13,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:20:13,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:20:13,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:20:13,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:20:13,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:20:13,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:20:13,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:20:13,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:20:13,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:20:13,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:20:13,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:20:13,741 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:20:13,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-07 11:20:13,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f874df3/c7263ebed079446694fbd0d033390779/FLAG0a2774fcb [2020-07-07 11:20:14,281 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:20:14,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-07 11:20:14,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f874df3/c7263ebed079446694fbd0d033390779/FLAG0a2774fcb [2020-07-07 11:20:14,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f874df3/c7263ebed079446694fbd0d033390779 [2020-07-07 11:20:14,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:20:14,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:20:14,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:14,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:20:14,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:20:14,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:14" (1/1) ... [2020-07-07 11:20:14,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4af83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:14, skipping insertion in model container [2020-07-07 11:20:14,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:14" (1/1) ... [2020-07-07 11:20:14,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:20:14,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:20:15,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:15,212 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:20:15,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:15,347 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:20:15,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15 WrapperNode [2020-07-07 11:20:15,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:15,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:20:15,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:20:15,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:20:15,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... [2020-07-07 11:20:15,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:20:15,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:20:15,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:20:15,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:20:15,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:20:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:20:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:20:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 11:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 11:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 11:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 11:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 11:20:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 11:20:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 11:20:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 11:20:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 11:20:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 11:20:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 11:20:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 11:20:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 11:20:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 11:20:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 11:20:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 11:20:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 11:20:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 11:20:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 11:20:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 11:20:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 11:20:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 11:20:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 11:20:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 11:20:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 11:20:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 11:20:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 11:20:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 11:20:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 11:20:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 11:20:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 11:20:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 11:20:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 11:20:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 11:20:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 11:20:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:20:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 11:20:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 11:20:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 11:20:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 11:20:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 11:20:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 11:20:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 11:20:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 11:20:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 11:20:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 11:20:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 11:20:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 11:20:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 11:20:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 11:20:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 11:20:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 11:20:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 11:20:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 11:20:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 11:20:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 11:20:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 11:20:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:20:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:20:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:20:16,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:20:16,150 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-07 11:20:16,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:16 BoogieIcfgContainer [2020-07-07 11:20:16,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:20:16,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:20:16,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:20:16,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:20:16,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:20:14" (1/3) ... [2020-07-07 11:20:16,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b64e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:16, skipping insertion in model container [2020-07-07 11:20:16,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:15" (2/3) ... [2020-07-07 11:20:16,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b64e820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:16, skipping insertion in model container [2020-07-07 11:20:16,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:16" (3/3) ... [2020-07-07 11:20:16,162 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-07 11:20:16,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:20:16,180 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-07 11:20:16,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-07 11:20:16,218 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:20:16,219 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:20:16,219 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:20:16,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:20:16,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:20:16,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:20:16,220 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:20:16,220 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:20:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-07 11:20:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-07 11:20:16,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:16,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:16,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:16,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-07 11:20:16,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:16,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879181515] [2020-07-07 11:20:16,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:16,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879181515] [2020-07-07 11:20:16,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:16,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:20:16,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098802795] [2020-07-07 11:20:16,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:20:16,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:20:16,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:16,491 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-07-07 11:20:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:16,721 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-07 11:20:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:20:16,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-07 11:20:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:16,733 INFO L225 Difference]: With dead ends: 186 [2020-07-07 11:20:16,733 INFO L226 Difference]: Without dead ends: 99 [2020-07-07 11:20:16,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-07 11:20:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-07 11:20:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-07 11:20:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-07 11:20:16,782 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-07 11:20:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:16,783 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-07 11:20:16,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:20:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-07 11:20:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:20:16,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:16,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:16,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:20:16,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-07 11:20:16,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:16,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258812742] [2020-07-07 11:20:16,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:16,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258812742] [2020-07-07 11:20:16,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:16,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:20:16,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340482683] [2020-07-07 11:20:16,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:20:16,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:16,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:20:16,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:16,850 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-07-07 11:20:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:16,995 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-07 11:20:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:20:16,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-07 11:20:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:16,997 INFO L225 Difference]: With dead ends: 84 [2020-07-07 11:20:16,997 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 11:20:16,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 11:20:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-07 11:20:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-07 11:20:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-07 11:20:17,009 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-07 11:20:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:17,009 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-07 11:20:17,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:20:17,009 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-07 11:20:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:20:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:17,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:17,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:20:17,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-07 11:20:17,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:17,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585870382] [2020-07-07 11:20:17,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:17,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585870382] [2020-07-07 11:20:17,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:17,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:17,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284571034] [2020-07-07 11:20:17,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:17,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:17,086 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-07-07 11:20:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:17,289 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-07 11:20:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:20:17,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 11:20:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:17,291 INFO L225 Difference]: With dead ends: 138 [2020-07-07 11:20:17,292 INFO L226 Difference]: Without dead ends: 136 [2020-07-07 11:20:17,292 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 [2020-07-07 11:20:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-07 11:20:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-07 11:20:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 11:20:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-07 11:20:17,301 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-07 11:20:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:17,301 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-07 11:20:17,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-07 11:20:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:20:17,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:17,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:17,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:20:17,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:17,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-07 11:20:17,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:17,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556602160] [2020-07-07 11:20:17,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:17,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556602160] [2020-07-07 11:20:17,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:17,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:17,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713544982] [2020-07-07 11:20:17,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:17,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:17,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:17,409 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-07 11:20:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:17,576 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-07 11:20:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:17,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 11:20:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:17,578 INFO L225 Difference]: With dead ends: 84 [2020-07-07 11:20:17,580 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 11:20:17,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 11:20:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-07-07 11:20:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-07 11:20:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-07-07 11:20:17,608 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-07-07 11:20:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:17,609 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-07-07 11:20:17,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-07-07 11:20:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:20:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:17,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:17,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:20:17,611 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-07 11:20:17,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:17,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804912669] [2020-07-07 11:20:17,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:17,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804912669] [2020-07-07 11:20:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:17,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163860813] [2020-07-07 11:20:17,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:17,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:17,710 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-07-07 11:20:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:17,904 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-07-07 11:20:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:17,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-07 11:20:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:17,905 INFO L225 Difference]: With dead ends: 199 [2020-07-07 11:20:17,906 INFO L226 Difference]: Without dead ends: 132 [2020-07-07 11:20:17,907 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 [2020-07-07 11:20:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-07 11:20:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-07-07 11:20:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-07 11:20:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-07 11:20:17,914 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-07-07 11:20:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:17,914 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-07 11:20:17,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-07 11:20:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:20:17,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:17,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:17,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:20:17,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-07-07 11:20:17,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:17,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010688285] [2020-07-07 11:20:17,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:17,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010688285] [2020-07-07 11:20:17,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:17,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:20:17,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614733192] [2020-07-07 11:20:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:20:17,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:17,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:20:17,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:17,986 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-07-07 11:20:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:18,197 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-07 11:20:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:20:18,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-07 11:20:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:18,199 INFO L225 Difference]: With dead ends: 126 [2020-07-07 11:20:18,199 INFO L226 Difference]: Without dead ends: 122 [2020-07-07 11:20:18,200 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 [2020-07-07 11:20:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-07 11:20:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-07 11:20:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-07 11:20:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-07 11:20:18,206 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-07 11:20:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:18,206 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-07 11:20:18,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:20:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-07 11:20:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:20:18,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:18,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:18,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:20:18,208 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-07-07 11:20:18,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:18,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144577392] [2020-07-07 11:20:18,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:18,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144577392] [2020-07-07 11:20:18,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:18,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:18,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093023177] [2020-07-07 11:20:18,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:18,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:18,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:18,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:18,267 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-07 11:20:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:18,429 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-07 11:20:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:18,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-07 11:20:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:18,431 INFO L225 Difference]: With dead ends: 136 [2020-07-07 11:20:18,431 INFO L226 Difference]: Without dead ends: 116 [2020-07-07 11:20:18,435 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 [2020-07-07 11:20:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-07 11:20:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-07 11:20:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 11:20:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-07 11:20:18,446 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-07 11:20:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:18,446 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-07 11:20:18,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-07 11:20:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:20:18,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:18,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:18,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:20:18,448 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-07-07 11:20:18,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:18,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392723421] [2020-07-07 11:20:18,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:18,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392723421] [2020-07-07 11:20:18,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:18,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:20:18,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99612618] [2020-07-07 11:20:18,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:20:18,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:20:18,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:18,518 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-07-07 11:20:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:18,643 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-07 11:20:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:20:18,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-07 11:20:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:18,646 INFO L225 Difference]: With dead ends: 141 [2020-07-07 11:20:18,646 INFO L226 Difference]: Without dead ends: 100 [2020-07-07 11:20:18,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-07 11:20:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-07-07 11:20:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-07 11:20:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-07-07 11:20:18,656 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-07-07 11:20:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:18,659 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-07-07 11:20:18,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:20:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-07-07 11:20:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:20:18,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:18,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:18,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:20:18,661 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:18,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-07-07 11:20:18,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:18,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558914965] [2020-07-07 11:20:18,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558914965] [2020-07-07 11:20:18,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:18,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:20:18,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378514842] [2020-07-07 11:20:18,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:20:18,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:20:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:18,722 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-07-07 11:20:18,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:18,823 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-07-07 11:20:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:20:18,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-07 11:20:18,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:18,824 INFO L225 Difference]: With dead ends: 79 [2020-07-07 11:20:18,824 INFO L226 Difference]: Without dead ends: 77 [2020-07-07 11:20:18,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-07 11:20:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-07 11:20:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-07 11:20:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-07-07 11:20:18,832 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-07-07 11:20:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:18,832 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-07-07 11:20:18,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:20:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-07-07 11:20:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:20:18,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:18,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:18,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:20:18,838 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-07-07 11:20:18,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:18,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122238593] [2020-07-07 11:20:18,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:18,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122238593] [2020-07-07 11:20:18,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:18,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:18,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912241422] [2020-07-07 11:20:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:18,901 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-07-07 11:20:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:19,043 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-07-07 11:20:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:19,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-07 11:20:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:19,044 INFO L225 Difference]: With dead ends: 78 [2020-07-07 11:20:19,044 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 11:20:19,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 11:20:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-07-07 11:20:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-07 11:20:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-07-07 11:20:19,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-07-07 11:20:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:19,049 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-07-07 11:20:19,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-07-07 11:20:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 11:20:19,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:19,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:19,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:20:19,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:19,052 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-07-07 11:20:19,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:19,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042035201] [2020-07-07 11:20:19,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:19,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042035201] [2020-07-07 11:20:19,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:19,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:20:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152963441] [2020-07-07 11:20:19,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:20:19,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:20:19,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:19,178 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-07-07 11:20:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:19,487 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-07-07 11:20:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:20:19,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-07 11:20:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:19,489 INFO L225 Difference]: With dead ends: 179 [2020-07-07 11:20:19,489 INFO L226 Difference]: Without dead ends: 137 [2020-07-07 11:20:19,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:20:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-07 11:20:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-07-07 11:20:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-07 11:20:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-07-07 11:20:19,495 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-07-07 11:20:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:19,496 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-07-07 11:20:19,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:20:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-07-07 11:20:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 11:20:19,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:19,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:19,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:20:19,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-07 11:20:19,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:19,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112680720] [2020-07-07 11:20:19,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:19,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112680720] [2020-07-07 11:20:19,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:19,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:20:19,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662738222] [2020-07-07 11:20:19,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:20:19,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:19,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:20:19,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:20:19,660 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 8 states. [2020-07-07 11:20:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:20,410 INFO L93 Difference]: Finished difference Result 228 states and 252 transitions. [2020-07-07 11:20:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:20:20,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-07 11:20:20,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:20,419 INFO L225 Difference]: With dead ends: 228 [2020-07-07 11:20:20,419 INFO L226 Difference]: Without dead ends: 226 [2020-07-07 11:20:20,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:20:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-07 11:20:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 97. [2020-07-07 11:20:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-07 11:20:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-07-07 11:20:20,433 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 28 [2020-07-07 11:20:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:20,433 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-07-07 11:20:20,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:20:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-07-07 11:20:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 11:20:20,434 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:20,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:20,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:20:20,435 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:20,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-07-07 11:20:20,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:20,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647687313] [2020-07-07 11:20:20,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:20:20,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647687313] [2020-07-07 11:20:20,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:20,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:20,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995687820] [2020-07-07 11:20:20,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:20,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:20,488 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 5 states. [2020-07-07 11:20:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:20,706 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-07-07 11:20:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:20:20,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-07 11:20:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:20,710 INFO L225 Difference]: With dead ends: 143 [2020-07-07 11:20:20,710 INFO L226 Difference]: Without dead ends: 125 [2020-07-07 11:20:20,711 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 [2020-07-07 11:20:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-07 11:20:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-07-07 11:20:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-07 11:20:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-07-07 11:20:20,718 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 30 [2020-07-07 11:20:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:20,719 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-07-07 11:20:20,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-07-07 11:20:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 11:20:20,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:20,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:20,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:20:20,721 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:20,721 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-07 11:20:20,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:20,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203937154] [2020-07-07 11:20:20,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:20:20,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203937154] [2020-07-07 11:20:20,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:20,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:20:20,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743944229] [2020-07-07 11:20:20,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:20:20,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:20,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:20:20,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:20,757 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-07-07 11:20:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:20,889 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-07-07 11:20:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:20:20,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-07 11:20:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:20,891 INFO L225 Difference]: With dead ends: 117 [2020-07-07 11:20:20,891 INFO L226 Difference]: Without dead ends: 115 [2020-07-07 11:20:20,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:20:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-07 11:20:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-07 11:20:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-07 11:20:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-07-07 11:20:20,899 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 30 [2020-07-07 11:20:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:20,899 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-07-07 11:20:20,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:20:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-07-07 11:20:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:20:20,901 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:20,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:20,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 11:20:20,901 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-07 11:20:20,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:20,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396663554] [2020-07-07 11:20:20,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:20:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:20:20,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:20:20,989 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:20:20,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 11:20:21,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:20:21 BoogieIcfgContainer [2020-07-07 11:20:21,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:20:21,037 INFO L168 Benchmark]: Toolchain (without parser) took 6377.92 ms. Allocated memory was 146.3 MB in the beginning and 273.7 MB in the end (delta: 127.4 MB). Free memory was 102.9 MB in the beginning and 174.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:21,038 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:20:21,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.52 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 102.7 MB in the beginning and 171.7 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:21,039 INFO L168 Benchmark]: Boogie Preprocessor took 81.77 ms. Allocated memory is still 205.0 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. [2020-07-07 11:20:21,040 INFO L168 Benchmark]: RCFGBuilder took 717.81 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 112.6 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:21,041 INFO L168 Benchmark]: TraceAbstraction took 4879.28 ms. Allocated memory was 205.0 MB in the beginning and 273.7 MB in the end (delta: 68.7 MB). Free memory was 111.9 MB in the beginning and 174.5 MB in the end (delta: -62.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:21,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.52 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 102.7 MB in the beginning and 171.7 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.77 ms. Allocated memory is still 205.0 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 717.81 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 112.6 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4879.28 ms. Allocated memory was 205.0 MB in the beginning and 273.7 MB in the end (delta: 68.7 MB). Free memory was 111.9 MB in the beginning and 174.5 MB in the end (delta: -62.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1050 SDtfs, 927 SDslu, 1484 SDs, 0 SdLazy, 1936 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=13, 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, 14 MinimizatonAttempts, 420 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 43533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 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...