/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:32:19,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:32:19,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:32:19,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:32:19,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:32:19,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:32:19,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:32:19,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:32:19,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:32:19,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:32:19,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:32:19,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:32:19,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:32:19,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:32:19,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:32:19,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:32:19,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:32:19,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:32:19,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:32:19,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:32:19,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:32:19,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:32:19,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:32:19,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:32:19,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:32:19,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:32:19,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:32:19,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:32:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:32:19,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:32:19,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:32:19,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:32:19,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:32:19,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:32:19,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:32:19,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:32:19,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:32:19,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:32:19,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:32:19,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:32:19,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:32:19,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:32:19,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:32:19,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:32:19,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:32:19,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:32:19,358 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:32:19,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:32:19,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:32:19,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:32:19,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:32:19,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:32:19,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:32:19,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:32:19,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:32:19,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:32:19,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:32:19,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:32:19,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:32:19,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:32:19,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:32:19,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:32:19,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:32:19,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:32:19,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:32:19,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:32:19,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:32:19,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:32:19,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:32:19,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:32:19,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:32:19,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:32:19,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:32:19,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:32:19,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:32:19,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:32:19,709 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:32:19,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2020-07-17 22:32:19,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c72b0ccd/d85e8f8a100b4091800320c1d96acc7c/FLAG6c79b137d [2020-07-17 22:32:20,440 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:32:20,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2020-07-17 22:32:20,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c72b0ccd/d85e8f8a100b4091800320c1d96acc7c/FLAG6c79b137d [2020-07-17 22:32:20,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c72b0ccd/d85e8f8a100b4091800320c1d96acc7c [2020-07-17 22:32:20,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:32:20,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:32:20,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:32:20,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:32:20,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:32:20,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:32:20" (1/1) ... [2020-07-17 22:32:20,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332d53b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:20, skipping insertion in model container [2020-07-17 22:32:20,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:32:20" (1/1) ... [2020-07-17 22:32:20,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:32:20,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:32:21,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:32:21,272 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:32:21,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:32:21,411 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:32:21,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21 WrapperNode [2020-07-17 22:32:21,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:32:21,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:32:21,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:32:21,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:32:21,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (1/1) ... [2020-07-17 22:32:21,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:32:21,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:32:21,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:32:21,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:32:21,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (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 [2020-07-17 22:32:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:32:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:32:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 22:32:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 22:32:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2020-07-17 22:32:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2020-07-17 22:32:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2020-07-17 22:32:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2020-07-17 22:32:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-17 22:32:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:32:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 22:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 22:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 22:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 22:32:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 22:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 22:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 22:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 22:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 22:32:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 22:32:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 22:32:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 22:32:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 22:32:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 22:32:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 22:32:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 22:32:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 22:32:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 22:32:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 22:32:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 22:32:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 22:32:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 22:32:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 22:32:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 22:32:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 22:32:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 22:32:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 22:32:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 22:32:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 22:32:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 22:32:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:32:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 22:32:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 22:32:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 22:32:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 22:32:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 22:32:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 22:32:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 22:32:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 22:32:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:32:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 22:32:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 22:32:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 22:32:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 22:32:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 22:32:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 22:32:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 22:32:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 22:32:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2020-07-17 22:32:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-17 22:32:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:32:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:32:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:32:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:32:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:32:21,990 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-17 22:32:22,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:32:22,633 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-17 22:32:22,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:32:22 BoogieIcfgContainer [2020-07-17 22:32:22,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:32:22,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:32:22,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:32:22,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:32:22,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:32:20" (1/3) ... [2020-07-17 22:32:22,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8734b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:32:22, skipping insertion in model container [2020-07-17 22:32:22,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:21" (2/3) ... [2020-07-17 22:32:22,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8734b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:32:22, skipping insertion in model container [2020-07-17 22:32:22,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:32:22" (3/3) ... [2020-07-17 22:32:22,647 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-1.i [2020-07-17 22:32:22,659 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:32:22,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:32:22,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:32:22,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:32:22,709 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:32:22,709 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:32:22,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:32:22,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:32:22,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:32:22,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:32:22,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:32:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-07-17 22:32:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:32:22,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:22,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:22,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:22,745 INFO L82 PathProgramCache]: Analyzing trace with hash 407034730, now seen corresponding path program 1 times [2020-07-17 22:32:22,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:22,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699062787] [2020-07-17 22:32:22,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:22,964 INFO L280 TraceCheckUtils]: 0: Hoare triple {62#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {57#true} is VALID [2020-07-17 22:32:22,965 INFO L280 TraceCheckUtils]: 1: Hoare triple {57#true} assume true; {57#true} is VALID [2020-07-17 22:32:22,966 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {57#true} {57#true} #165#return; {57#true} is VALID [2020-07-17 22:32:22,971 INFO L263 TraceCheckUtils]: 0: Hoare triple {57#true} call ULTIMATE.init(); {62#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:22,971 INFO L280 TraceCheckUtils]: 1: Hoare triple {62#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {57#true} is VALID [2020-07-17 22:32:22,972 INFO L280 TraceCheckUtils]: 2: Hoare triple {57#true} assume true; {57#true} is VALID [2020-07-17 22:32:22,972 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {57#true} {57#true} #165#return; {57#true} is VALID [2020-07-17 22:32:22,972 INFO L263 TraceCheckUtils]: 4: Hoare triple {57#true} call #t~ret38 := main(); {57#true} is VALID [2020-07-17 22:32:22,973 INFO L280 TraceCheckUtils]: 5: Hoare triple {57#true} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(8);~a~0.base, ~a~0.offset := #t~malloc30.base, #t~malloc30.offset; {57#true} is VALID [2020-07-17 22:32:22,973 INFO L280 TraceCheckUtils]: 6: Hoare triple {57#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {57#true} is VALID [2020-07-17 22:32:22,973 INFO L280 TraceCheckUtils]: 7: Hoare triple {57#true} havoc ~t~0.base, ~t~0.offset;~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset;call write~int(2, ~a~0.base, ~a~0.offset, 4); {57#true} is VALID [2020-07-17 22:32:22,975 INFO L280 TraceCheckUtils]: 8: Hoare triple {57#true} assume !true; {58#false} is VALID [2020-07-17 22:32:22,975 INFO L280 TraceCheckUtils]: 9: Hoare triple {58#false} call write~int(2, ~p~0.base, ~p~0.offset, 4);call write~$Pointer$(0, 0, ~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {58#false} is VALID [2020-07-17 22:32:22,975 INFO L280 TraceCheckUtils]: 10: Hoare triple {58#false} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {58#false} is VALID [2020-07-17 22:32:22,976 INFO L280 TraceCheckUtils]: 11: Hoare triple {58#false} assume 2 != #t~mem34;havoc #t~mem34; {58#false} is VALID [2020-07-17 22:32:22,976 INFO L280 TraceCheckUtils]: 12: Hoare triple {58#false} assume !false; {58#false} is VALID [2020-07-17 22:32:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:22,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699062787] [2020-07-17 22:32:22,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:32:22,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:32:22,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582646606] [2020-07-17 22:32:22,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-17 22:32:22,996 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:23,000 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:32:23,041 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:23,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:32:23,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:23,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:32:23,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:32:23,053 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-07-17 22:32:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:23,539 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2020-07-17 22:32:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:32:23,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-17 22:32:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:32:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2020-07-17 22:32:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:32:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2020-07-17 22:32:23,594 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 129 transitions. [2020-07-17 22:32:23,798 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 129 edges. 129 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:23,820 INFO L225 Difference]: With dead ends: 95 [2020-07-17 22:32:23,820 INFO L226 Difference]: Without dead ends: 18 [2020-07-17 22:32:23,825 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 [2020-07-17 22:32:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-17 22:32:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-17 22:32:23,863 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:23,863 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-17 22:32:23,864 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:32:23,864 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:32:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:23,868 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-17 22:32:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:32:23,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:23,869 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:23,869 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:32:23,869 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:32:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:23,873 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-17 22:32:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:32:23,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:23,874 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:23,874 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:23,874 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 22:32:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-17 22:32:23,879 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-17 22:32:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:23,879 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-17 22:32:23,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:32:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:32:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:32:23,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:23,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:23,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:32:23,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash -709462780, now seen corresponding path program 1 times [2020-07-17 22:32:23,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:23,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294033249] [2020-07-17 22:32:23,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,074 INFO L280 TraceCheckUtils]: 0: Hoare triple {260#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {252#true} is VALID [2020-07-17 22:32:24,075 INFO L280 TraceCheckUtils]: 1: Hoare triple {252#true} assume true; {252#true} is VALID [2020-07-17 22:32:24,075 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {252#true} {252#true} #165#return; {252#true} is VALID [2020-07-17 22:32:24,076 INFO L263 TraceCheckUtils]: 0: Hoare triple {252#true} call ULTIMATE.init(); {260#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:24,077 INFO L280 TraceCheckUtils]: 1: Hoare triple {260#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {252#true} is VALID [2020-07-17 22:32:24,077 INFO L280 TraceCheckUtils]: 2: Hoare triple {252#true} assume true; {252#true} is VALID [2020-07-17 22:32:24,077 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {252#true} {252#true} #165#return; {252#true} is VALID [2020-07-17 22:32:24,078 INFO L263 TraceCheckUtils]: 4: Hoare triple {252#true} call #t~ret38 := main(); {252#true} is VALID [2020-07-17 22:32:24,078 INFO L280 TraceCheckUtils]: 5: Hoare triple {252#true} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(8);~a~0.base, ~a~0.offset := #t~malloc30.base, #t~malloc30.offset; {252#true} is VALID [2020-07-17 22:32:24,078 INFO L280 TraceCheckUtils]: 6: Hoare triple {252#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {252#true} is VALID [2020-07-17 22:32:24,080 INFO L280 TraceCheckUtils]: 7: Hoare triple {252#true} havoc ~t~0.base, ~t~0.offset;~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset;call write~int(2, ~a~0.base, ~a~0.offset, 4); {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-17 22:32:24,082 INFO L280 TraceCheckUtils]: 8: Hoare triple {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume -2147483648 <= #t~nondet31 && #t~nondet31 <= 2147483647; {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-17 22:32:24,083 INFO L280 TraceCheckUtils]: 9: Hoare triple {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume !(0 != #t~nondet31);havoc #t~nondet31; {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-17 22:32:24,085 INFO L280 TraceCheckUtils]: 10: Hoare triple {257#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} call write~int(2, ~p~0.base, ~p~0.offset, 4);call write~$Pointer$(0, 0, ~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {258#(= 2 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-17 22:32:24,087 INFO L280 TraceCheckUtils]: 11: Hoare triple {258#(= 2 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {259#(= |main_#t~mem34| 2)} is VALID [2020-07-17 22:32:24,089 INFO L280 TraceCheckUtils]: 12: Hoare triple {259#(= |main_#t~mem34| 2)} assume 2 != #t~mem34;havoc #t~mem34; {253#false} is VALID [2020-07-17 22:32:24,090 INFO L280 TraceCheckUtils]: 13: Hoare triple {253#false} assume !false; {253#false} is VALID [2020-07-17 22:32:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:24,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294033249] [2020-07-17 22:32:24,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:32:24,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:32:24,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424006557] [2020-07-17 22:32:24,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-17 22:32:24,095 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:24,095 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:32:24,116 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:24,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:32:24,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:32:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:32:24,117 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-17 22:32:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:24,437 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-17 22:32:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:32:24,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-17 22:32:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:32:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2020-07-17 22:32:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:32:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2020-07-17 22:32:24,447 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 35 transitions. [2020-07-17 22:32:24,499 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:24,501 INFO L225 Difference]: With dead ends: 33 [2020-07-17 22:32:24,502 INFO L226 Difference]: Without dead ends: 31 [2020-07-17 22:32:24,503 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 [2020-07-17 22:32:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-17 22:32:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-07-17 22:32:24,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:24,525 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 23 states. [2020-07-17 22:32:24,525 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 23 states. [2020-07-17 22:32:24,526 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 23 states. [2020-07-17 22:32:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:24,528 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-17 22:32:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-17 22:32:24,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:24,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:24,529 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 31 states. [2020-07-17 22:32:24,530 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 31 states. [2020-07-17 22:32:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:24,532 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-17 22:32:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-17 22:32:24,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:24,533 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:24,534 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:24,534 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 22:32:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-07-17 22:32:24,536 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-07-17 22:32:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:24,536 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-07-17 22:32:24,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:32:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-07-17 22:32:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 22:32:24,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:24,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:24,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:32:24,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash -66753378, now seen corresponding path program 1 times [2020-07-17 22:32:24,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:24,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658628156] [2020-07-17 22:32:24,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,733 INFO L280 TraceCheckUtils]: 0: Hoare triple {411#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {402#true} is VALID [2020-07-17 22:32:24,739 INFO L280 TraceCheckUtils]: 1: Hoare triple {402#true} assume true; {402#true} is VALID [2020-07-17 22:32:24,739 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {402#true} {402#true} #165#return; {402#true} is VALID [2020-07-17 22:32:24,744 INFO L263 TraceCheckUtils]: 0: Hoare triple {402#true} call ULTIMATE.init(); {411#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:24,745 INFO L280 TraceCheckUtils]: 1: Hoare triple {411#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {402#true} is VALID [2020-07-17 22:32:24,745 INFO L280 TraceCheckUtils]: 2: Hoare triple {402#true} assume true; {402#true} is VALID [2020-07-17 22:32:24,745 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {402#true} {402#true} #165#return; {402#true} is VALID [2020-07-17 22:32:24,746 INFO L263 TraceCheckUtils]: 4: Hoare triple {402#true} call #t~ret38 := main(); {402#true} is VALID [2020-07-17 22:32:24,747 INFO L280 TraceCheckUtils]: 5: Hoare triple {402#true} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(8);~a~0.base, ~a~0.offset := #t~malloc30.base, #t~malloc30.offset; {407#(= 0 main_~a~0.offset)} is VALID [2020-07-17 22:32:24,747 INFO L280 TraceCheckUtils]: 6: Hoare triple {407#(= 0 main_~a~0.offset)} assume !(~a~0.base == 0 && ~a~0.offset == 0); {407#(= 0 main_~a~0.offset)} is VALID [2020-07-17 22:32:24,748 INFO L280 TraceCheckUtils]: 7: Hoare triple {407#(= 0 main_~a~0.offset)} havoc ~t~0.base, ~t~0.offset;~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset;call write~int(2, ~a~0.base, ~a~0.offset, 4); {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:24,749 INFO L280 TraceCheckUtils]: 8: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} assume -2147483648 <= #t~nondet31 && #t~nondet31 <= 2147483647; {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:24,750 INFO L280 TraceCheckUtils]: 9: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} assume !(0 != #t~nondet31);havoc #t~nondet31; {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:24,752 INFO L280 TraceCheckUtils]: 10: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} call write~int(2, ~p~0.base, ~p~0.offset, 4);call write~$Pointer$(0, 0, ~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:24,754 INFO L280 TraceCheckUtils]: 11: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:24,755 INFO L280 TraceCheckUtils]: 12: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} assume !(2 != #t~mem34);havoc #t~mem34; {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:24,756 INFO L280 TraceCheckUtils]: 13: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} call #t~mem35.base, #t~mem35.offset := read~$Pointer$(~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := #t~mem35.base, #t~mem35.offset;havoc #t~mem35.base, #t~mem35.offset; {410#(and (= 0 main_~p~0.offset) (= 0 main_~p~0.base))} is VALID [2020-07-17 22:32:24,757 INFO L280 TraceCheckUtils]: 14: Hoare triple {410#(and (= 0 main_~p~0.offset) (= 0 main_~p~0.base))} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {403#false} is VALID [2020-07-17 22:32:24,757 INFO L280 TraceCheckUtils]: 15: Hoare triple {403#false} assume 2 != #t~mem34;havoc #t~mem34; {403#false} is VALID [2020-07-17 22:32:24,757 INFO L280 TraceCheckUtils]: 16: Hoare triple {403#false} assume !false; {403#false} is VALID [2020-07-17 22:32:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:24,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658628156] [2020-07-17 22:32:24,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820179006] [2020-07-17 22:32:24,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:32:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,871 INFO L264 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-17 22:32:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:24,889 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:32:25,001 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-17 22:32:25,002 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,013 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:32:25,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-17 22:32:25,019 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,027 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:32:25,028 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,028 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-07-17 22:32:25,080 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-17 22:32:25,082 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,090 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:32:25,093 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-17 22:32:25,095 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,101 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 22:32:25,101 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 22:32:25,102 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-07-17 22:32:25,106 WARN L406 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2020-07-17 22:32:25,107 WARN L407 uantifierElimination]: Input elimination task: ∃ [|#memory_$Pointer$.base|, v_main_~p~0.base_12, |#memory_$Pointer$.offset|]. (let ((.cse1 (select (select |#memory_$Pointer$.offset| v_main_~p~0.base_12) 4)) (.cse0 (select (select |#memory_$Pointer$.base| v_main_~p~0.base_12) 4))) (and (= .cse0 main_~p~0.base) (= 0 .cse1) (= .cse1 main_~p~0.offset) (= 0 .cse0))) [2020-07-17 22:32:25,107 WARN L408 uantifierElimination]: ElimStorePlain result: ∃ []. (and (= 0 main_~p~0.offset) (= 0 main_~p~0.base)) [2020-07-17 22:32:25,111 INFO L263 TraceCheckUtils]: 0: Hoare triple {402#true} call ULTIMATE.init(); {402#true} is VALID [2020-07-17 22:32:25,112 INFO L280 TraceCheckUtils]: 1: Hoare triple {402#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {402#true} is VALID [2020-07-17 22:32:25,112 INFO L280 TraceCheckUtils]: 2: Hoare triple {402#true} assume true; {402#true} is VALID [2020-07-17 22:32:25,113 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {402#true} {402#true} #165#return; {402#true} is VALID [2020-07-17 22:32:25,113 INFO L263 TraceCheckUtils]: 4: Hoare triple {402#true} call #t~ret38 := main(); {402#true} is VALID [2020-07-17 22:32:25,114 INFO L280 TraceCheckUtils]: 5: Hoare triple {402#true} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(8);~a~0.base, ~a~0.offset := #t~malloc30.base, #t~malloc30.offset; {407#(= 0 main_~a~0.offset)} is VALID [2020-07-17 22:32:25,115 INFO L280 TraceCheckUtils]: 6: Hoare triple {407#(= 0 main_~a~0.offset)} assume !(~a~0.base == 0 && ~a~0.offset == 0); {407#(= 0 main_~a~0.offset)} is VALID [2020-07-17 22:32:25,116 INFO L280 TraceCheckUtils]: 7: Hoare triple {407#(= 0 main_~a~0.offset)} havoc ~t~0.base, ~t~0.offset;~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset;call write~int(2, ~a~0.base, ~a~0.offset, 4); {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:25,118 INFO L280 TraceCheckUtils]: 8: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} assume -2147483648 <= #t~nondet31 && #t~nondet31 <= 2147483647; {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:25,119 INFO L280 TraceCheckUtils]: 9: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} assume !(0 != #t~nondet31);havoc #t~nondet31; {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} is VALID [2020-07-17 22:32:25,121 INFO L280 TraceCheckUtils]: 10: Hoare triple {408#(and (= main_~a~0.base main_~p~0.base) (= 0 main_~p~0.offset) (= 0 main_~a~0.offset))} call write~int(2, ~p~0.base, ~p~0.offset, 4);call write~$Pointer$(0, 0, ~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:25,123 INFO L280 TraceCheckUtils]: 11: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:25,124 INFO L280 TraceCheckUtils]: 12: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} assume !(2 != #t~mem34);havoc #t~mem34; {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} is VALID [2020-07-17 22:32:25,125 INFO L280 TraceCheckUtils]: 13: Hoare triple {409#(and (= 0 (select (select |#memory_$Pointer$.base| main_~p~0.base) (+ main_~p~0.offset 4))) (= 0 main_~p~0.offset) (= 0 (select (select |#memory_$Pointer$.offset| main_~p~0.base) (+ main_~p~0.offset 4))))} call #t~mem35.base, #t~mem35.offset := read~$Pointer$(~p~0.base, 4 + ~p~0.offset, 4);~p~0.base, ~p~0.offset := #t~mem35.base, #t~mem35.offset;havoc #t~mem35.base, #t~mem35.offset; {410#(and (= 0 main_~p~0.offset) (= 0 main_~p~0.base))} is VALID [2020-07-17 22:32:25,126 INFO L280 TraceCheckUtils]: 14: Hoare triple {410#(and (= 0 main_~p~0.offset) (= 0 main_~p~0.base))} assume !!(~p~0.base != 0 || ~p~0.offset != 0);call #t~mem34 := read~int(~p~0.base, ~p~0.offset, 4); {403#false} is VALID [2020-07-17 22:32:25,127 INFO L280 TraceCheckUtils]: 15: Hoare triple {403#false} assume 2 != #t~mem34;havoc #t~mem34; {403#false} is VALID [2020-07-17 22:32:25,127 INFO L280 TraceCheckUtils]: 16: Hoare triple {403#false} assume !false; {403#false} is VALID [2020-07-17 22:32:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:25,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:32:25,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2020-07-17 22:32:25,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448733931] [2020-07-17 22:32:25,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-07-17 22:32:25,131 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:25,131 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-17 22:32:25,164 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:25,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 22:32:25,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:25,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 22:32:25,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:32:25,166 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-07-17 22:32:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:25,495 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-07-17 22:32:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 22:32:25,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-07-17 22:32:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:32:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 39 transitions. [2020-07-17 22:32:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:32:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 39 transitions. [2020-07-17 22:32:25,502 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 39 transitions. [2020-07-17 22:32:25,560 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:25,562 INFO L225 Difference]: With dead ends: 37 [2020-07-17 22:32:25,562 INFO L226 Difference]: Without dead ends: 27 [2020-07-17 22:32:25,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:32:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-17 22:32:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-07-17 22:32:25,581 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:25,581 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand 20 states. [2020-07-17 22:32:25,581 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 20 states. [2020-07-17 22:32:25,581 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 20 states. [2020-07-17 22:32:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:25,585 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-07-17 22:32:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-17 22:32:25,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:25,587 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:25,587 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 27 states. [2020-07-17 22:32:25,587 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 27 states. [2020-07-17 22:32:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:25,591 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-07-17 22:32:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-17 22:32:25,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:25,593 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:25,593 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:25,593 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-17 22:32:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-17 22:32:25,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-07-17 22:32:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:25,599 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-17 22:32:25,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 22:32:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-17 22:32:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 22:32:25,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:25,600 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:25,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 22:32:25,816 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1381959275, now seen corresponding path program 1 times [2020-07-17 22:32:25,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:25,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611553277] [2020-07-17 22:32:25,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:32:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:32:25,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:32:25,906 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:32:25,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 22:32:25,949 WARN L170 areAnnotationChecker]: sl_random_insertENTRY has no Hoare annotation [2020-07-17 22:32:25,949 WARN L170 areAnnotationChecker]: create_sl_with_head_and_tailENTRY has no Hoare annotation [2020-07-17 22:32:25,949 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:32:25,949 WARN L170 areAnnotationChecker]: myexitENTRY has no Hoare annotation [2020-07-17 22:32:25,949 WARN L170 areAnnotationChecker]: __bswap_32ENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: __bswap_64ENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: destroy_slENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: alloc_or_dieENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: L554-5 has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: L554-5 has no Hoare annotation [2020-07-17 22:32:25,950 WARN L170 areAnnotationChecker]: create_sl_with_head_and_tailFINAL has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: L578 has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: __bswap_32FINAL has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: __bswap_64FINAL has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: L570-3 has no Hoare annotation [2020-07-17 22:32:25,952 WARN L170 areAnnotationChecker]: L570-3 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: alloc_or_dieFINAL has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: L586 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: L586 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: L554-6 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: L554-1 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: L554-1 has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: create_sl_with_head_and_tailEXIT has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:32:25,953 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L570-4 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L570-1 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L570-1 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L586-1 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L586-1 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L586-3 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L557-5 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L557-5 has no Hoare annotation [2020-07-17 22:32:25,954 WARN L170 areAnnotationChecker]: L554-3 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L554-3 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L606 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: destroy_slFINAL has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L590-3 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L590-3 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L557-6 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L557-1 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L557-1 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L608-1 has no Hoare annotation [2020-07-17 22:32:25,955 WARN L170 areAnnotationChecker]: L608-1 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: destroy_slEXIT has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L590-4 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L590-1 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L590-1 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L562 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L562 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L557-3 has no Hoare annotation [2020-07-17 22:32:25,956 WARN L170 areAnnotationChecker]: L557-3 has no Hoare annotation [2020-07-17 22:32:25,957 WARN L170 areAnnotationChecker]: L607-3 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L607-3 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L607-1 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L607-1 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L609 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L600-2 has no Hoare annotation [2020-07-17 22:32:25,962 WARN L170 areAnnotationChecker]: L600-2 has no Hoare annotation [2020-07-17 22:32:25,963 WARN L170 areAnnotationChecker]: L600-2 has no Hoare annotation [2020-07-17 22:32:25,963 WARN L170 areAnnotationChecker]: L593 has no Hoare annotation [2020-07-17 22:32:25,963 WARN L170 areAnnotationChecker]: L593 has no Hoare annotation [2020-07-17 22:32:25,963 WARN L170 areAnnotationChecker]: L562-2 has no Hoare annotation [2020-07-17 22:32:25,963 WARN L170 areAnnotationChecker]: L608 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L608 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L600-3 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L600-3 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L601 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L601 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L593-1 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L593-1 has no Hoare annotation [2020-07-17 22:32:25,964 WARN L170 areAnnotationChecker]: L593-3 has no Hoare annotation [2020-07-17 22:32:25,965 WARN L170 areAnnotationChecker]: sl_random_insertEXIT has no Hoare annotation [2020-07-17 22:32:25,965 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:32:25,965 WARN L170 areAnnotationChecker]: L602 has no Hoare annotation [2020-07-17 22:32:25,965 WARN L170 areAnnotationChecker]: L602 has no Hoare annotation [2020-07-17 22:32:25,965 WARN L170 areAnnotationChecker]: L601-2 has no Hoare annotation [2020-07-17 22:32:25,965 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. [2020-07-17 22:32:25,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:32:25 BoogieIcfgContainer [2020-07-17 22:32:25,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:32:25,975 INFO L168 Benchmark]: Toolchain (without parser) took 5292.06 ms. Allocated memory was 137.4 MB in the beginning and 251.1 MB in the end (delta: 113.8 MB). Free memory was 99.3 MB in the beginning and 167.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,977 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.80 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 166.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,984 INFO L168 Benchmark]: Boogie Preprocessor took 125.71 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 162.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,986 INFO L168 Benchmark]: RCFGBuilder took 1098.94 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.6 MB in the beginning and 204.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,987 INFO L168 Benchmark]: TraceAbstraction took 3332.35 ms. Allocated memory was 233.3 MB in the beginning and 251.1 MB in the end (delta: 17.8 MB). Free memory was 203.5 MB in the beginning and 167.8 MB in the end (delta: 35.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:25,990 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 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.80 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 166.6 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.71 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 162.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1098.94 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.6 MB in the beginning and 204.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3332.35 ms. Allocated memory was 233.3 MB in the beginning and 251.1 MB in the end (delta: 17.8 MB). Free memory was 203.5 MB in the beginning and 167.8 MB in the end (delta: 35.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L586] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L587] List t; [L588] List p = a; [L589] a->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L590] COND TRUE __VERIFIER_nondet_int() [L591] p->h = 1 [L592] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L593] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L594] p->n = t [L595] EXPR p->n [L595] p = p->n [L590] COND FALSE !(__VERIFIER_nondet_int()) [L597] p->h = 2 [L598] p->n = 0 [L599] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L600] COND TRUE p!=0 [L601] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L601] COND TRUE p->h != 2 [L602] __VERIFIER_error() VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 56 SDslu, 76 SDs, 0 SdLazy, 141 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4732 SizeOfPredicates, 7 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...