/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 05:15:12,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:15:12,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:15:12,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:15:12,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:15:12,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:15:12,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:15:12,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:15:12,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:15:12,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:15:12,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:15:12,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:15:12,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:15:12,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:15:12,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:15:12,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:15:12,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:15:12,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:15:12,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:15:12,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:15:12,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:15:12,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:15:12,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:15:12,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:15:12,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 05:15:12,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 05:15:12,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 05:15:12,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 05:15:12,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 05:15:12,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 05:15:12,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 05:15:12,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 05:15:12,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 05:15:12,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 05:15:12,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 05:15:12,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 05:15:12,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 05:15:12,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 05:15:12,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:15:12,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:15:12,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:15:12,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 05:15:12,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:15:12,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:15:12,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:15:12,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:15:12,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:15:12,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:15:12,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:15:12,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:15:12,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:15:12,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:15:12,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:15:12,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:15:12,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:15:12,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:15:12,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:15:12,600 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:15:12,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:15:12,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:15:12,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:15:12,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:15:12,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:15:12,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:15:12,601 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 05:15:12,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:15:12,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:15:12,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:15:12,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:15:12,883 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:15:12,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-18 05:15:12,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14285e56/905f31f948bc4ebf9fd962ac99d207e0/FLAG589a5e7df [2020-07-18 05:15:13,470 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:15:13,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-18 05:15:13,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14285e56/905f31f948bc4ebf9fd962ac99d207e0/FLAG589a5e7df [2020-07-18 05:15:13,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14285e56/905f31f948bc4ebf9fd962ac99d207e0 [2020-07-18 05:15:13,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:15:13,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:15:13,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:15:13,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:15:13,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:15:13,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:15:13" (1/1) ... [2020-07-18 05:15:13,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b7ff71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:13, skipping insertion in model container [2020-07-18 05:15:13,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:15:13" (1/1) ... [2020-07-18 05:15:13,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:15:13,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:15:14,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:15:14,270 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:15:14,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:15:14,371 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:15:14,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14 WrapperNode [2020-07-18 05:15:14,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:15:14,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:15:14,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:15:14,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:15:14,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (1/1) ... [2020-07-18 05:15:14,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:15:14,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:15:14,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:15:14,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:15:14,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (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 [2020-07-18 05:15:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:15:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:15:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-18 05:15:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-18 05:15:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-18 05:15:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-18 05:15:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-18 05:15:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-18 05:15:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-18 05:15:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-18 05:15:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-18 05:15:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-18 05:15:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-18 05:15:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-18 05:15:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-18 05:15:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-18 05:15:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-18 05:15:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-18 05:15:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-18 05:15:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-18 05:15:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-18 05:15:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-18 05:15:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-18 05:15:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-18 05:15:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-18 05:15:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-18 05:15:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-18 05:15:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-18 05:15:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-18 05:15:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-18 05:15:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-18 05:15:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-18 05:15:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-18 05:15:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-18 05:15:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-18 05:15:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-18 05:15:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-18 05:15:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-18 05:15:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-18 05:15:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-18 05:15:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-18 05:15:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-18 05:15:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-18 05:15:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-18 05:15:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-18 05:15:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-18 05:15:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 05:15:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:15:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:15:15,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:15:15,184 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-18 05:15:15,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:15:15 BoogieIcfgContainer [2020-07-18 05:15:15,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:15:15,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:15:15,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:15:15,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:15:15,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:15:13" (1/3) ... [2020-07-18 05:15:15,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d4701c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:15:15, skipping insertion in model container [2020-07-18 05:15:15,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:15:14" (2/3) ... [2020-07-18 05:15:15,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d4701c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:15:15, skipping insertion in model container [2020-07-18 05:15:15,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:15:15" (3/3) ... [2020-07-18 05:15:15,198 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-07-18 05:15:15,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:15:15,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-18 05:15:15,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-18 05:15:15,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:15:15,262 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:15:15,262 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:15:15,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:15:15,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:15:15,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:15:15,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:15:15,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:15:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-07-18 05:15:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-18 05:15:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:15:15,296 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] [2020-07-18 05:15:15,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:15:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:15:15,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1451075683, now seen corresponding path program 1 times [2020-07-18 05:15:15,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:15:15,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280449101] [2020-07-18 05:15:15,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:15:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:15,555 INFO L280 TraceCheckUtils]: 0: Hoare triple {104#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {97#true} is VALID [2020-07-18 05:15:15,556 INFO L280 TraceCheckUtils]: 1: Hoare triple {97#true} #valid := #valid[0 := 0]; {97#true} is VALID [2020-07-18 05:15:15,556 INFO L280 TraceCheckUtils]: 2: Hoare triple {97#true} assume 0 < #StackHeapBarrier; {97#true} is VALID [2020-07-18 05:15:15,557 INFO L280 TraceCheckUtils]: 3: Hoare triple {97#true} assume true; {97#true} is VALID [2020-07-18 05:15:15,557 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {97#true} {97#true} #206#return; {97#true} is VALID [2020-07-18 05:15:15,561 INFO L263 TraceCheckUtils]: 0: Hoare triple {97#true} call ULTIMATE.init(); {104#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:15:15,561 INFO L280 TraceCheckUtils]: 1: Hoare triple {104#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {97#true} is VALID [2020-07-18 05:15:15,562 INFO L280 TraceCheckUtils]: 2: Hoare triple {97#true} #valid := #valid[0 := 0]; {97#true} is VALID [2020-07-18 05:15:15,562 INFO L280 TraceCheckUtils]: 3: Hoare triple {97#true} assume 0 < #StackHeapBarrier; {97#true} is VALID [2020-07-18 05:15:15,562 INFO L280 TraceCheckUtils]: 4: Hoare triple {97#true} assume true; {97#true} is VALID [2020-07-18 05:15:15,563 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {97#true} {97#true} #206#return; {97#true} is VALID [2020-07-18 05:15:15,563 INFO L263 TraceCheckUtils]: 6: Hoare triple {97#true} call #t~ret16 := main(); {97#true} is VALID [2020-07-18 05:15:15,563 INFO L280 TraceCheckUtils]: 7: Hoare triple {97#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8); srcloc: mainENTRY {97#true} is VALID [2020-07-18 05:15:15,564 INFO L280 TraceCheckUtils]: 8: Hoare triple {97#true} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {97#true} is VALID [2020-07-18 05:15:15,564 INFO L280 TraceCheckUtils]: 9: Hoare triple {97#true} SUMMARY for call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4); srcloc: L993 {97#true} is VALID [2020-07-18 05:15:15,565 INFO L280 TraceCheckUtils]: 10: Hoare triple {97#true} SUMMARY for call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4); srcloc: L993-1 {97#true} is VALID [2020-07-18 05:15:15,565 INFO L280 TraceCheckUtils]: 11: Hoare triple {97#true} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {97#true} is VALID [2020-07-18 05:15:15,566 INFO L280 TraceCheckUtils]: 12: Hoare triple {97#true} assume !true; {98#false} is VALID [2020-07-18 05:15:15,566 INFO L280 TraceCheckUtils]: 13: Hoare triple {98#false} SUMMARY for call write~int(1, ~x~0.base, 4 + ~x~0.offset, 4); srcloc: L999-5 {98#false} is VALID [2020-07-18 05:15:15,567 INFO L280 TraceCheckUtils]: 14: Hoare triple {98#false} SUMMARY for call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnHeap(8); srcloc: L1007 {98#false} is VALID [2020-07-18 05:15:15,567 INFO L280 TraceCheckUtils]: 15: Hoare triple {98#false} SUMMARY for call write~$Pointer$(#t~malloc4.base, #t~malloc4.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1008 {98#false} is VALID [2020-07-18 05:15:15,567 INFO L280 TraceCheckUtils]: 16: Hoare triple {98#false} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L1008-1 {98#false} is VALID [2020-07-18 05:15:15,568 INFO L280 TraceCheckUtils]: 17: Hoare triple {98#false} SUMMARY for call write~int(2, #t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L1009 {98#false} is VALID [2020-07-18 05:15:15,568 INFO L280 TraceCheckUtils]: 18: Hoare triple {98#false} havoc #t~mem5.base, #t~mem5.offset; {98#false} is VALID [2020-07-18 05:15:15,568 INFO L280 TraceCheckUtils]: 19: Hoare triple {98#false} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {98#false} is VALID [2020-07-18 05:15:15,569 INFO L280 TraceCheckUtils]: 20: Hoare triple {98#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {98#false} is VALID [2020-07-18 05:15:15,569 INFO L280 TraceCheckUtils]: 21: Hoare triple {98#false} assume !false; {98#false} is VALID [2020-07-18 05:15:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:15:15,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280449101] [2020-07-18 05:15:15,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:15:15,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 05:15:15,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625275940] [2020-07-18 05:15:15,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-18 05:15:15,586 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:15:15,590 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 05:15:15,630 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:15,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 05:15:15,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:15:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 05:15:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:15:15,643 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-07-18 05:15:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:16,117 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2020-07-18 05:15:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 05:15:16,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-18 05:15:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:15:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:15:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-07-18 05:15:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:15:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-07-18 05:15:16,156 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 222 transitions. [2020-07-18 05:15:16,461 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 222 edges. 222 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:16,485 INFO L225 Difference]: With dead ends: 176 [2020-07-18 05:15:16,486 INFO L226 Difference]: Without dead ends: 83 [2020-07-18 05:15:16,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:15:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-18 05:15:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-18 05:15:16,632 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:15:16,634 INFO L82 GeneralOperation]: Start isEquivalent. First operand 83 states. Second operand 83 states. [2020-07-18 05:15:16,634 INFO L74 IsIncluded]: Start isIncluded. First operand 83 states. Second operand 83 states. [2020-07-18 05:15:16,635 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 83 states. [2020-07-18 05:15:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:16,652 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-07-18 05:15:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-07-18 05:15:16,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:16,655 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:16,655 INFO L74 IsIncluded]: Start isIncluded. First operand 83 states. Second operand 83 states. [2020-07-18 05:15:16,655 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 83 states. [2020-07-18 05:15:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:16,669 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-07-18 05:15:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-07-18 05:15:16,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:16,670 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:16,671 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:15:16,671 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:15:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-18 05:15:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-07-18 05:15:16,685 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 22 [2020-07-18 05:15:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:15:16,685 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-07-18 05:15:16,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 05:15:16,686 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 83 states and 85 transitions. [2020-07-18 05:15:16,790 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-07-18 05:15:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-18 05:15:16,792 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:15:16,792 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] [2020-07-18 05:15:16,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:15:16,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:15:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:15:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -410944389, now seen corresponding path program 1 times [2020-07-18 05:15:16,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:15:16,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955521527] [2020-07-18 05:15:16,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:15:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:16,968 INFO L280 TraceCheckUtils]: 0: Hoare triple {802#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {791#true} is VALID [2020-07-18 05:15:16,968 INFO L280 TraceCheckUtils]: 1: Hoare triple {791#true} #valid := #valid[0 := 0]; {791#true} is VALID [2020-07-18 05:15:16,969 INFO L280 TraceCheckUtils]: 2: Hoare triple {791#true} assume 0 < #StackHeapBarrier; {791#true} is VALID [2020-07-18 05:15:16,969 INFO L280 TraceCheckUtils]: 3: Hoare triple {791#true} assume true; {791#true} is VALID [2020-07-18 05:15:16,969 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {791#true} {791#true} #206#return; {791#true} is VALID [2020-07-18 05:15:16,971 INFO L263 TraceCheckUtils]: 0: Hoare triple {791#true} call ULTIMATE.init(); {802#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:15:16,971 INFO L280 TraceCheckUtils]: 1: Hoare triple {802#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {791#true} is VALID [2020-07-18 05:15:16,971 INFO L280 TraceCheckUtils]: 2: Hoare triple {791#true} #valid := #valid[0 := 0]; {791#true} is VALID [2020-07-18 05:15:16,972 INFO L280 TraceCheckUtils]: 3: Hoare triple {791#true} assume 0 < #StackHeapBarrier; {791#true} is VALID [2020-07-18 05:15:16,972 INFO L280 TraceCheckUtils]: 4: Hoare triple {791#true} assume true; {791#true} is VALID [2020-07-18 05:15:16,972 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {791#true} {791#true} #206#return; {791#true} is VALID [2020-07-18 05:15:16,972 INFO L263 TraceCheckUtils]: 6: Hoare triple {791#true} call #t~ret16 := main(); {791#true} is VALID [2020-07-18 05:15:16,973 INFO L280 TraceCheckUtils]: 7: Hoare triple {791#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8); srcloc: mainENTRY {791#true} is VALID [2020-07-18 05:15:16,973 INFO L280 TraceCheckUtils]: 8: Hoare triple {791#true} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {791#true} is VALID [2020-07-18 05:15:16,973 INFO L280 TraceCheckUtils]: 9: Hoare triple {791#true} SUMMARY for call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4); srcloc: L993 {791#true} is VALID [2020-07-18 05:15:16,974 INFO L280 TraceCheckUtils]: 10: Hoare triple {791#true} SUMMARY for call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4); srcloc: L993-1 {791#true} is VALID [2020-07-18 05:15:16,974 INFO L280 TraceCheckUtils]: 11: Hoare triple {791#true} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {791#true} is VALID [2020-07-18 05:15:16,974 INFO L280 TraceCheckUtils]: 12: Hoare triple {791#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {791#true} is VALID [2020-07-18 05:15:16,974 INFO L280 TraceCheckUtils]: 13: Hoare triple {791#true} assume !!(0 != #t~nondet1); {791#true} is VALID [2020-07-18 05:15:16,975 INFO L280 TraceCheckUtils]: 14: Hoare triple {791#true} havoc #t~nondet1; {791#true} is VALID [2020-07-18 05:15:16,976 INFO L280 TraceCheckUtils]: 15: Hoare triple {791#true} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8); srcloc: L1002 {798#(not (= 0 |main_#t~malloc2.base|))} is VALID [2020-07-18 05:15:16,977 INFO L280 TraceCheckUtils]: 16: Hoare triple {798#(not (= 0 |main_#t~malloc2.base|))} SUMMARY for call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1002-1 {799#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} is VALID [2020-07-18 05:15:16,978 INFO L280 TraceCheckUtils]: 17: Hoare triple {799#(not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)))} SUMMARY for call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L1002-2 {800#(not (= 0 |main_#t~mem3.base|))} is VALID [2020-07-18 05:15:16,979 INFO L280 TraceCheckUtils]: 18: Hoare triple {800#(not (= 0 |main_#t~mem3.base|))} ~x~0.base, ~x~0.offset := #t~mem3.base, #t~mem3.offset; {801#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:15:16,979 INFO L280 TraceCheckUtils]: 19: Hoare triple {801#(not (= 0 main_~x~0.base))} havoc #t~mem3.base, #t~mem3.offset; {801#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:15:16,980 INFO L280 TraceCheckUtils]: 20: Hoare triple {801#(not (= 0 main_~x~0.base))} SUMMARY for call write~int(0, ~x~0.base, 4 + ~x~0.offset, 4); srcloc: L1004 {801#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:15:16,981 INFO L280 TraceCheckUtils]: 21: Hoare triple {801#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {792#false} is VALID [2020-07-18 05:15:16,981 INFO L280 TraceCheckUtils]: 22: Hoare triple {792#false} assume !false; {792#false} is VALID [2020-07-18 05:15:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:15:16,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955521527] [2020-07-18 05:15:16,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:15:16,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 05:15:16,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351606175] [2020-07-18 05:15:16,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-18 05:15:16,988 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:15:16,988 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 05:15:17,014 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:17,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 05:15:17,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:15:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 05:15:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 05:15:17,015 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 7 states. [2020-07-18 05:15:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:18,211 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2020-07-18 05:15:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-18 05:15:18,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-18 05:15:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:15:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:15:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2020-07-18 05:15:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:15:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2020-07-18 05:15:18,219 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 152 transitions. [2020-07-18 05:15:18,404 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 152 edges. 152 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:18,410 INFO L225 Difference]: With dead ends: 148 [2020-07-18 05:15:18,410 INFO L226 Difference]: Without dead ends: 146 [2020-07-18 05:15:18,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-18 05:15:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-18 05:15:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 81. [2020-07-18 05:15:18,473 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:15:18,474 INFO L82 GeneralOperation]: Start isEquivalent. First operand 146 states. Second operand 81 states. [2020-07-18 05:15:18,474 INFO L74 IsIncluded]: Start isIncluded. First operand 146 states. Second operand 81 states. [2020-07-18 05:15:18,474 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 81 states. [2020-07-18 05:15:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:18,492 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-07-18 05:15:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2020-07-18 05:15:18,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:18,494 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:18,495 INFO L74 IsIncluded]: Start isIncluded. First operand 81 states. Second operand 146 states. [2020-07-18 05:15:18,495 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 146 states. [2020-07-18 05:15:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:18,507 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-07-18 05:15:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2020-07-18 05:15:18,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:18,517 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:18,517 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:15:18,517 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:15:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-18 05:15:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-07-18 05:15:18,522 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 23 [2020-07-18 05:15:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:15:18,523 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-07-18 05:15:18,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 05:15:18,523 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 81 states and 83 transitions. [2020-07-18 05:15:18,599 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-07-18 05:15:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 05:15:18,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:15:18,600 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] [2020-07-18 05:15:18,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 05:15:18,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:15:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:15:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash -922794179, now seen corresponding path program 1 times [2020-07-18 05:15:18,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:15:18,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889957039] [2020-07-18 05:15:18,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:15:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:18,731 INFO L280 TraceCheckUtils]: 0: Hoare triple {1578#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1568#true} is VALID [2020-07-18 05:15:18,731 INFO L280 TraceCheckUtils]: 1: Hoare triple {1568#true} #valid := #valid[0 := 0]; {1568#true} is VALID [2020-07-18 05:15:18,731 INFO L280 TraceCheckUtils]: 2: Hoare triple {1568#true} assume 0 < #StackHeapBarrier; {1568#true} is VALID [2020-07-18 05:15:18,732 INFO L280 TraceCheckUtils]: 3: Hoare triple {1568#true} assume true; {1568#true} is VALID [2020-07-18 05:15:18,732 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1568#true} {1568#true} #206#return; {1568#true} is VALID [2020-07-18 05:15:18,733 INFO L263 TraceCheckUtils]: 0: Hoare triple {1568#true} call ULTIMATE.init(); {1578#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:15:18,733 INFO L280 TraceCheckUtils]: 1: Hoare triple {1578#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1568#true} is VALID [2020-07-18 05:15:18,734 INFO L280 TraceCheckUtils]: 2: Hoare triple {1568#true} #valid := #valid[0 := 0]; {1568#true} is VALID [2020-07-18 05:15:18,734 INFO L280 TraceCheckUtils]: 3: Hoare triple {1568#true} assume 0 < #StackHeapBarrier; {1568#true} is VALID [2020-07-18 05:15:18,734 INFO L280 TraceCheckUtils]: 4: Hoare triple {1568#true} assume true; {1568#true} is VALID [2020-07-18 05:15:18,734 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1568#true} {1568#true} #206#return; {1568#true} is VALID [2020-07-18 05:15:18,735 INFO L263 TraceCheckUtils]: 6: Hoare triple {1568#true} call #t~ret16 := main(); {1568#true} is VALID [2020-07-18 05:15:18,735 INFO L280 TraceCheckUtils]: 7: Hoare triple {1568#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8); srcloc: mainENTRY {1575#(not (= 0 |main_#t~malloc0.base|))} is VALID [2020-07-18 05:15:18,736 INFO L280 TraceCheckUtils]: 8: Hoare triple {1575#(not (= 0 |main_#t~malloc0.base|))} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,737 INFO L280 TraceCheckUtils]: 9: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4); srcloc: L993 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,737 INFO L280 TraceCheckUtils]: 10: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4); srcloc: L993-1 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,738 INFO L280 TraceCheckUtils]: 11: Hoare triple {1576#(not (= 0 main_~head~0.base))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,739 INFO L280 TraceCheckUtils]: 12: Hoare triple {1576#(not (= 0 main_~head~0.base))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,742 INFO L280 TraceCheckUtils]: 13: Hoare triple {1576#(not (= 0 main_~head~0.base))} assume !(0 != #t~nondet1); {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,743 INFO L280 TraceCheckUtils]: 14: Hoare triple {1576#(not (= 0 main_~head~0.base))} havoc #t~nondet1; {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,745 INFO L280 TraceCheckUtils]: 15: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call write~int(1, ~x~0.base, 4 + ~x~0.offset, 4); srcloc: L999-5 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,746 INFO L280 TraceCheckUtils]: 16: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnHeap(8); srcloc: L1007 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,747 INFO L280 TraceCheckUtils]: 17: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call write~$Pointer$(#t~malloc4.base, #t~malloc4.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1008 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,747 INFO L280 TraceCheckUtils]: 18: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L1008-1 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,748 INFO L280 TraceCheckUtils]: 19: Hoare triple {1576#(not (= 0 main_~head~0.base))} SUMMARY for call write~int(2, #t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L1009 {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,749 INFO L280 TraceCheckUtils]: 20: Hoare triple {1576#(not (= 0 main_~head~0.base))} havoc #t~mem5.base, #t~mem5.offset; {1576#(not (= 0 main_~head~0.base))} is VALID [2020-07-18 05:15:18,749 INFO L280 TraceCheckUtils]: 21: Hoare triple {1576#(not (= 0 main_~head~0.base))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {1577#(not (= 0 main_~x~0.base))} is VALID [2020-07-18 05:15:18,750 INFO L280 TraceCheckUtils]: 22: Hoare triple {1577#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {1569#false} is VALID [2020-07-18 05:15:18,750 INFO L280 TraceCheckUtils]: 23: Hoare triple {1569#false} assume !false; {1569#false} is VALID [2020-07-18 05:15:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:15:18,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889957039] [2020-07-18 05:15:18,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:15:18,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 05:15:18,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164406108] [2020-07-18 05:15:18,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-18 05:15:18,754 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:15:18,754 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 05:15:18,785 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:18,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 05:15:18,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:15:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 05:15:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-18 05:15:18,786 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 6 states. [2020-07-18 05:15:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:19,588 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-07-18 05:15:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 05:15:19,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-18 05:15:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:15:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 05:15:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2020-07-18 05:15:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 05:15:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2020-07-18 05:15:19,596 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 146 transitions. [2020-07-18 05:15:19,742 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 146 edges. 146 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:19,746 INFO L225 Difference]: With dead ends: 142 [2020-07-18 05:15:19,747 INFO L226 Difference]: Without dead ends: 140 [2020-07-18 05:15:19,748 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 [2020-07-18 05:15:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-18 05:15:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 79. [2020-07-18 05:15:19,882 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:15:19,883 INFO L82 GeneralOperation]: Start isEquivalent. First operand 140 states. Second operand 79 states. [2020-07-18 05:15:19,883 INFO L74 IsIncluded]: Start isIncluded. First operand 140 states. Second operand 79 states. [2020-07-18 05:15:19,883 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 79 states. [2020-07-18 05:15:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:19,890 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2020-07-18 05:15:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2020-07-18 05:15:19,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:19,891 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:19,891 INFO L74 IsIncluded]: Start isIncluded. First operand 79 states. Second operand 140 states. [2020-07-18 05:15:19,891 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 140 states. [2020-07-18 05:15:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:19,897 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2020-07-18 05:15:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2020-07-18 05:15:19,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:19,898 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:19,898 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:15:19,898 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:15:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-18 05:15:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-07-18 05:15:19,902 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 24 [2020-07-18 05:15:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:15:19,902 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-07-18 05:15:19,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 05:15:19,902 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 79 states and 81 transitions. [2020-07-18 05:15:20,006 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-07-18 05:15:20,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 05:15:20,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:15:20,008 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] [2020-07-18 05:15:20,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 05:15:20,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:15:20,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:15:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1955200303, now seen corresponding path program 1 times [2020-07-18 05:15:20,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:15:20,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780814344] [2020-07-18 05:15:20,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:15:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:15:20,525 INFO L280 TraceCheckUtils]: 0: Hoare triple {2324#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {2307#true} is VALID [2020-07-18 05:15:20,526 INFO L280 TraceCheckUtils]: 1: Hoare triple {2307#true} #valid := #valid[0 := 0]; {2307#true} is VALID [2020-07-18 05:15:20,526 INFO L280 TraceCheckUtils]: 2: Hoare triple {2307#true} assume 0 < #StackHeapBarrier; {2307#true} is VALID [2020-07-18 05:15:20,526 INFO L280 TraceCheckUtils]: 3: Hoare triple {2307#true} assume true; {2307#true} is VALID [2020-07-18 05:15:20,527 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {2307#true} {2307#true} #206#return; {2307#true} is VALID [2020-07-18 05:15:20,528 INFO L263 TraceCheckUtils]: 0: Hoare triple {2307#true} call ULTIMATE.init(); {2324#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:15:20,528 INFO L280 TraceCheckUtils]: 1: Hoare triple {2324#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {2307#true} is VALID [2020-07-18 05:15:20,529 INFO L280 TraceCheckUtils]: 2: Hoare triple {2307#true} #valid := #valid[0 := 0]; {2307#true} is VALID [2020-07-18 05:15:20,529 INFO L280 TraceCheckUtils]: 3: Hoare triple {2307#true} assume 0 < #StackHeapBarrier; {2307#true} is VALID [2020-07-18 05:15:20,529 INFO L280 TraceCheckUtils]: 4: Hoare triple {2307#true} assume true; {2307#true} is VALID [2020-07-18 05:15:20,530 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {2307#true} {2307#true} #206#return; {2307#true} is VALID [2020-07-18 05:15:20,530 INFO L263 TraceCheckUtils]: 6: Hoare triple {2307#true} call #t~ret16 := main(); {2307#true} is VALID [2020-07-18 05:15:20,533 INFO L280 TraceCheckUtils]: 7: Hoare triple {2307#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8); srcloc: mainENTRY {2314#(and (= 1 (select |#valid| |main_#t~malloc0.base|)) (= 0 |main_#t~malloc0.offset|))} is VALID [2020-07-18 05:15:20,534 INFO L280 TraceCheckUtils]: 8: Hoare triple {2314#(and (= 1 (select |#valid| |main_#t~malloc0.base|)) (= 0 |main_#t~malloc0.offset|))} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,535 INFO L280 TraceCheckUtils]: 9: Hoare triple {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} SUMMARY for call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4); srcloc: L993 {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,536 INFO L280 TraceCheckUtils]: 10: Hoare triple {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} SUMMARY for call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4); srcloc: L993-1 {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,538 INFO L280 TraceCheckUtils]: 11: Hoare triple {2315#(and (= 1 (select |#valid| main_~head~0.base)) (= 0 main_~head~0.offset))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,542 INFO L280 TraceCheckUtils]: 12: Hoare triple {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,543 INFO L280 TraceCheckUtils]: 13: Hoare triple {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} assume !(0 != #t~nondet1); {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,544 INFO L280 TraceCheckUtils]: 14: Hoare triple {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} havoc #t~nondet1; {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,545 INFO L280 TraceCheckUtils]: 15: Hoare triple {2316#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~head~0.offset))} SUMMARY for call write~int(1, ~x~0.base, 4 + ~x~0.offset, 4); srcloc: L999-5 {2317#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,547 INFO L280 TraceCheckUtils]: 16: Hoare triple {2317#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= 1 (select |#valid| main_~x~0.base)) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset))} SUMMARY for call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnHeap(8); srcloc: L1007 {2318#(and (not (= |main_#t~malloc4.base| main_~x~0.base)) (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,549 INFO L280 TraceCheckUtils]: 17: Hoare triple {2318#(and (not (= |main_#t~malloc4.base| main_~x~0.base)) (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset))} SUMMARY for call write~$Pointer$(#t~malloc4.base, #t~malloc4.offset, ~x~0.base, ~x~0.offset, 4); srcloc: L1008 {2319#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} is VALID [2020-07-18 05:15:20,550 INFO L280 TraceCheckUtils]: 18: Hoare triple {2319#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1) (= 0 main_~head~0.offset) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset) main_~x~0.base)))} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4); srcloc: L1008-1 {2320#(and (not (= |main_#t~mem5.base| main_~head~0.base)) (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,552 INFO L280 TraceCheckUtils]: 19: Hoare triple {2320#(and (not (= |main_#t~mem5.base| main_~head~0.base)) (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} SUMMARY for call write~int(2, #t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L1009 {2321#(and (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,554 INFO L280 TraceCheckUtils]: 20: Hoare triple {2321#(and (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} havoc #t~mem5.base, #t~mem5.offset; {2321#(and (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} is VALID [2020-07-18 05:15:20,555 INFO L280 TraceCheckUtils]: 21: Hoare triple {2321#(and (= 1 (select (select |#memory_int| main_~head~0.base) (+ main_~head~0.offset 4))) (= 0 main_~head~0.offset))} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} is VALID [2020-07-18 05:15:20,556 INFO L280 TraceCheckUtils]: 22: Hoare triple {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} assume !!(0 != ~x~0.base || 0 != ~x~0.offset); {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} is VALID [2020-07-18 05:15:20,557 INFO L280 TraceCheckUtils]: 23: Hoare triple {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} goto; {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} is VALID [2020-07-18 05:15:20,558 INFO L280 TraceCheckUtils]: 24: Hoare triple {2322#(= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)} SUMMARY for call #t~mem6 := read~int(~x~0.base, 4 + ~x~0.offset, 4); srcloc: L1015-4 {2323#(= 1 |main_#t~mem6|)} is VALID [2020-07-18 05:15:20,558 INFO L280 TraceCheckUtils]: 25: Hoare triple {2323#(= 1 |main_#t~mem6|)} assume !!(1 != #t~mem6); {2308#false} is VALID [2020-07-18 05:15:20,559 INFO L280 TraceCheckUtils]: 26: Hoare triple {2308#false} havoc #t~mem6; {2308#false} is VALID [2020-07-18 05:15:20,559 INFO L280 TraceCheckUtils]: 27: Hoare triple {2308#false} SUMMARY for call #t~mem7 := read~int(~x~0.base, 4 + ~x~0.offset, 4); srcloc: L1017-7 {2308#false} is VALID [2020-07-18 05:15:20,559 INFO L280 TraceCheckUtils]: 28: Hoare triple {2308#false} assume !(0 == #t~mem7); {2308#false} is VALID [2020-07-18 05:15:20,559 INFO L280 TraceCheckUtils]: 29: Hoare triple {2308#false} havoc #t~mem7; {2308#false} is VALID [2020-07-18 05:15:20,560 INFO L280 TraceCheckUtils]: 30: Hoare triple {2308#false} assume !false; {2308#false} is VALID [2020-07-18 05:15:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:15:20,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780814344] [2020-07-18 05:15:20,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:15:20,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-18 05:15:20,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717433860] [2020-07-18 05:15:20,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-07-18 05:15:20,565 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:15:20,565 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states. [2020-07-18 05:15:20,598 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:20,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-18 05:15:20,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:15:20,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-18 05:15:20,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-18 05:15:20,599 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2020-07-18 05:15:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:23,052 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-07-18 05:15:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-18 05:15:23,053 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-07-18 05:15:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:15:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-18 05:15:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 229 transitions. [2020-07-18 05:15:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-18 05:15:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 229 transitions. [2020-07-18 05:15:23,069 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states and 229 transitions. [2020-07-18 05:15:23,355 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 229 edges. 229 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:23,360 INFO L225 Difference]: With dead ends: 223 [2020-07-18 05:15:23,360 INFO L226 Difference]: Without dead ends: 177 [2020-07-18 05:15:23,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-07-18 05:15:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-07-18 05:15:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 93. [2020-07-18 05:15:23,797 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:15:23,797 INFO L82 GeneralOperation]: Start isEquivalent. First operand 177 states. Second operand 93 states. [2020-07-18 05:15:23,797 INFO L74 IsIncluded]: Start isIncluded. First operand 177 states. Second operand 93 states. [2020-07-18 05:15:23,797 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 93 states. [2020-07-18 05:15:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:23,805 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-07-18 05:15:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2020-07-18 05:15:23,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:23,806 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:23,806 INFO L74 IsIncluded]: Start isIncluded. First operand 93 states. Second operand 177 states. [2020-07-18 05:15:23,807 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 177 states. [2020-07-18 05:15:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:15:23,814 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-07-18 05:15:23,814 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2020-07-18 05:15:23,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:15:23,815 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:15:23,815 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:15:23,815 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:15:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-18 05:15:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-07-18 05:15:23,819 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 31 [2020-07-18 05:15:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:15:23,820 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-07-18 05:15:23,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-18 05:15:23,820 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 93 states and 96 transitions. [2020-07-18 05:15:24,028 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 96 edges. 96 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:15:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-07-18 05:15:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 05:15:24,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:15:24,030 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] [2020-07-18 05:15:24,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 05:15:24,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:15:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:15:24,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2043057935, now seen corresponding path program 1 times [2020-07-18 05:15:24,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:15:24,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836659308] [2020-07-18 05:15:24,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:15:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:15:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:15:24,107 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 05:15:24,108 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 05:15:24,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-18 05:15:24,170 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L992 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: L993 has no Hoare annotation [2020-07-18 05:15:24,171 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L993-1 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L994 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L1005-4 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L1005-4 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L999-5 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L999-1 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L999-1 has no Hoare annotation [2020-07-18 05:15:24,172 WARN L170 areAnnotationChecker]: L1007 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L999-2 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L999-4 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1008 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1008-1 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1002-1 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1009 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1009-1 has no Hoare annotation [2020-07-18 05:15:24,173 WARN L170 areAnnotationChecker]: L1003 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1011 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1003-1 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1015-4 has no Hoare annotation [2020-07-18 05:15:24,174 WARN L170 areAnnotationChecker]: L1015-4 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1013-1 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1013-1 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1013-3 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1013-3 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1005-3 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1005-3 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1005-3 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1020-6 has no Hoare annotation [2020-07-18 05:15:24,175 WARN L170 areAnnotationChecker]: L1020-6 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1015 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1015 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1005-2 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1005-2 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1020 has no Hoare annotation [2020-07-18 05:15:24,176 WARN L170 areAnnotationChecker]: L1020 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1020-7 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1015-1 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1015-3 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1020-1 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1020-4 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1017-7 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1017-7 has no Hoare annotation [2020-07-18 05:15:24,177 WARN L170 areAnnotationChecker]: L1020-2 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1020-2 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1020-5 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1020-5 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1021-1 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1017-1 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1017-1 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1017-8 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1022-7 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1022-7 has no Hoare annotation [2020-07-18 05:15:24,178 WARN L170 areAnnotationChecker]: L1017-2 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1017-5 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1018 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1022-1 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1022-1 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1022-8 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1017-3 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1017-3 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1017-6 has no Hoare annotation [2020-07-18 05:15:24,179 WARN L170 areAnnotationChecker]: L1017-6 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1018-1 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-2 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-5 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1030-1 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1030-1 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-3 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-3 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-6 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1022-6 has no Hoare annotation [2020-07-18 05:15:24,180 WARN L170 areAnnotationChecker]: L1032-6 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1032-6 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1026-1 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1026-1 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1032 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1032 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1032-7 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1026-2 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1026-4 has no Hoare annotation [2020-07-18 05:15:24,181 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1032-4 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1033 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1028 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1032-2 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1032-2 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1032-5 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1032-5 has no Hoare annotation [2020-07-18 05:15:24,182 WARN L170 areAnnotationChecker]: L1033-1 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1029 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1034 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1034-1 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1029-2 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: L1030 has no Hoare annotation [2020-07-18 05:15:24,183 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 05:15:24,183 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 05:15:24,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:15:24 BoogieIcfgContainer [2020-07-18 05:15:24,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:15:24,191 INFO L168 Benchmark]: Toolchain (without parser) took 10402.73 ms. Allocated memory was 139.5 MB in the beginning and 335.5 MB in the end (delta: 196.1 MB). Free memory was 102.4 MB in the beginning and 265.9 MB in the end (delta: -163.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-07-18 05:15:24,191 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 05:15:24,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.73 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 170.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-18 05:15:24,193 INFO L168 Benchmark]: Boogie Preprocessor took 77.76 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-18 05:15:24,194 INFO L168 Benchmark]: RCFGBuilder took 737.68 ms. Allocated memory is still 203.9 MB. Free memory was 166.8 MB in the beginning and 102.3 MB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-18 05:15:24,195 INFO L168 Benchmark]: TraceAbstraction took 8997.37 ms. Allocated memory was 203.9 MB in the beginning and 335.5 MB in the end (delta: 131.6 MB). Free memory was 102.3 MB in the beginning and 265.9 MB in the end (delta: -163.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 05:15:24,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 582.73 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 170.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.76 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.68 ms. Allocated memory is still 203.9 MB. Free memory was 166.8 MB in the beginning and 102.3 MB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8997.37 ms. Allocated memory was 203.9 MB in the beginning and 335.5 MB in the end (delta: 131.6 MB). Free memory was 102.3 MB in the beginning and 265.9 MB in the end (delta: -163.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L999] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1007] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1008] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1009] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1009] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1011] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1013] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1015] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1015] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] COND TRUE !(2 == x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 94 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 821 SDslu, 778 SDs, 0 SdLazy, 749 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...