/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:31:47,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:31:47,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:31:47,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:31:47,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:31:47,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:31:47,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:31:47,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:31:47,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:31:47,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:31:47,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:31:47,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:31:47,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:31:47,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:31:47,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:31:47,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:31:47,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:31:47,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:31:47,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:31:47,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:31:47,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:31:47,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:31:47,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:31:47,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:31:47,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:31:47,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:31:47,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:31:47,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:31:47,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:31:47,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:31:47,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:31:47,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:31:47,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:31:47,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:31:47,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:31:47,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:31:47,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:31:47,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:31:47,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:31:47,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:31:47,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:31:47,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:31:47,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:31:47,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:31:47,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:31:47,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:31:47,907 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:31:47,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:31:47,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:31:47,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:31:47,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:31:47,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:31:47,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:31:47,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:31:47,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:31:47,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:31:47,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:31:47,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:31:47,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:31:47,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:31:47,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:31:47,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:31:47,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:31:47,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:31:47,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:31:47,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:31:47,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:31:47,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:31:47,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:31:47,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:31:47,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:31:47,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:31:48,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:31:48,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:31:48,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:31:48,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:31:48,482 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:31:48,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-04 13:31:48,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b9e407e/f17ed2f7174545aeb83a8e35c67f2d70/FLAGbb85256fa [2020-09-04 13:31:49,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:31:49,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-04 13:31:49,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b9e407e/f17ed2f7174545aeb83a8e35c67f2d70/FLAGbb85256fa [2020-09-04 13:31:49,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79b9e407e/f17ed2f7174545aeb83a8e35c67f2d70 [2020-09-04 13:31:49,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:31:49,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:31:49,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:31:49,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:31:49,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:31:49,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:31:49" (1/1) ... [2020-09-04 13:31:49,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d587f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:49, skipping insertion in model container [2020-09-04 13:31:49,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:31:49" (1/1) ... [2020-09-04 13:31:49,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:31:49,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:31:50,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:31:50,130 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:31:50,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:31:50,309 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:31:50,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50 WrapperNode [2020-09-04 13:31:50,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:31:50,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:31:50,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:31:50,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:31:50,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... [2020-09-04 13:31:50,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:31:50,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:31:50,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:31:50,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:31:50,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:31:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:31:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:31:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 13:31:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 13:31:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-04 13:31:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:31:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:31:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:31:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 13:31:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 13:31:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 13:31:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 13:31:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 13:31:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 13:31:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 13:31:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 13:31:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 13:31:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 13:31:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 13:31:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 13:31:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 13:31:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 13:31:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 13:31:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 13:31:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 13:31:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 13:31:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 13:31:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 13:31:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 13:31:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 13:31:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 13:31:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 13:31:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 13:31:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-04 13:31:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:31:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:31:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:31:50,936 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-04 13:31:51,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:31:51,163 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 13:31:51,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:31:51 BoogieIcfgContainer [2020-09-04 13:31:51,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:31:51,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:31:51,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:31:51,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:31:51,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:31:49" (1/3) ... [2020-09-04 13:31:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7574982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:31:51, skipping insertion in model container [2020-09-04 13:31:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:31:50" (2/3) ... [2020-09-04 13:31:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7574982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:31:51, skipping insertion in model container [2020-09-04 13:31:51,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:31:51" (3/3) ... [2020-09-04 13:31:51,179 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-04 13:31:51,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:31:51,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:31:51,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:31:51,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:31:51,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:31:51,259 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:31:51,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:31:51,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:31:51,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:31:51,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:31:51,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:31:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-04 13:31:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:31:51,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:51,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:51,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-09-04 13:31:51,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:51,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808048775] [2020-09-04 13:31:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 13:31:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:31:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 13:31:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 13:31:51,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808048775] [2020-09-04 13:31:51,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:51,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:31:51,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508705584] [2020-09-04 13:31:51,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:31:51,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:51,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:31:51,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:31:51,690 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-09-04 13:31:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:51,913 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-09-04 13:31:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:31:51,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-04 13:31:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:51,929 INFO L225 Difference]: With dead ends: 136 [2020-09-04 13:31:51,929 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 13:31:51,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:31:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 13:31:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-09-04 13:31:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 13:31:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-04 13:31:51,990 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-09-04 13:31:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:51,990 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-04 13:31:51,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:31:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-04 13:31:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 13:31:51,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:51,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:51,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:31:51,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:51,995 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-09-04 13:31:51,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:51,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782252873] [2020-09-04 13:31:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:31:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 13:31:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 13:31:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:31:52,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782252873] [2020-09-04 13:31:52,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331184388] [2020-09-04 13:31:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:31:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:31:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:52,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:31:52,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 15 [2020-09-04 13:31:52,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723655882] [2020-09-04 13:31:52,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:31:52,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:31:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:31:52,609 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-09-04 13:31:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:52,760 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2020-09-04 13:31:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:31:52,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-04 13:31:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:52,763 INFO L225 Difference]: With dead ends: 95 [2020-09-04 13:31:52,763 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 13:31:52,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-04 13:31:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 13:31:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-04 13:31:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 13:31:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-04 13:31:52,775 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 44 [2020-09-04 13:31:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:52,777 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-04 13:31:52,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:31:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-04 13:31:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 13:31:52,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:52,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:52,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:31:52,996 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-09-04 13:31:52,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:52,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030846242] [2020-09-04 13:31:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:31:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 13:31:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 13:31:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:31:53,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030846242] [2020-09-04 13:31:53,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026277071] [2020-09-04 13:31:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:53,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-04 13:31:53,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:31:53,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:31:53,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 15 [2020-09-04 13:31:53,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519147128] [2020-09-04 13:31:53,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 13:31:53,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 13:31:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:31:53,488 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 15 states. [2020-09-04 13:31:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:54,248 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2020-09-04 13:31:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 13:31:54,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-09-04 13:31:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:54,251 INFO L225 Difference]: With dead ends: 114 [2020-09-04 13:31:54,251 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 13:31:54,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:31:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 13:31:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 59. [2020-09-04 13:31:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 13:31:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-09-04 13:31:54,263 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 48 [2020-09-04 13:31:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:54,263 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-09-04 13:31:54,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 13:31:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-09-04 13:31:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 13:31:54,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:54,266 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:54,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:54,481 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:54,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash -137443652, now seen corresponding path program 2 times [2020-09-04 13:31:54,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:54,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652114326] [2020-09-04 13:31:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:31:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:31:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 13:31:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 13:31:54,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652114326] [2020-09-04 13:31:54,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:54,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 13:31:54,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765342713] [2020-09-04 13:31:54,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 13:31:54,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:54,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 13:31:54,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:31:54,827 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 12 states. [2020-09-04 13:31:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:55,318 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-09-04 13:31:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:31:55,320 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-04 13:31:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:55,322 INFO L225 Difference]: With dead ends: 79 [2020-09-04 13:31:55,322 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 13:31:55,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:31:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 13:31:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-09-04 13:31:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 13:31:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-09-04 13:31:55,337 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-09-04 13:31:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:55,337 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-09-04 13:31:55,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 13:31:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-09-04 13:31:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 13:31:55,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:55,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:55,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:31:55,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 1 times [2020-09-04 13:31:55,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:55,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606979695] [2020-09-04 13:31:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:31:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:31:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 13:31:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-04 13:31:55,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606979695] [2020-09-04 13:31:55,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:31:55,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 13:31:55,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675561395] [2020-09-04 13:31:55,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:31:55,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:31:55,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:31:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:31:55,520 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 9 states. [2020-09-04 13:31:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:31:55,888 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2020-09-04 13:31:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:31:55,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-04 13:31:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:31:55,892 INFO L225 Difference]: With dead ends: 136 [2020-09-04 13:31:55,892 INFO L226 Difference]: Without dead ends: 95 [2020-09-04 13:31:55,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:31:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-04 13:31:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-09-04 13:31:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 13:31:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-09-04 13:31:55,921 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 53 [2020-09-04 13:31:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:31:55,921 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-09-04 13:31:55,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:31:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-09-04 13:31:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 13:31:55,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:31:55,928 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:31:55,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:31:55,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:31:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:31:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-09-04 13:31:55,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:31:55,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061655415] [2020-09-04 13:31:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:31:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:31:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:31:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:31:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:31:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 13:31:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 13:31:56,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061655415] [2020-09-04 13:31:56,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911699965] [2020-09-04 13:31:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:31:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:31:56,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 44 conjunts are in the unsatisfiable core [2020-09-04 13:31:56,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:31:56,479 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-09-04 13:31:56,479 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:56,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:56,490 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:31:56,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2020-09-04 13:31:56,780 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 [2020-09-04 13:31:56,781 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:31:56,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:31:56,792 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-04 13:31:56,793 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-09-04 13:31:58,862 WARN L860 $PredicateComparison]: unable to prove that (exists ((|main_~#s~0.base| Int) (|main_~#s~0.offset| Int)) (not (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) 0) 0))) is different from true [2020-09-04 13:32:02,916 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 18 [2020-09-04 13:32:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:32:03,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:32:03,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2020-09-04 13:32:03,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127145702] [2020-09-04 13:32:03,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 13:32:03,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:32:03,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 13:32:03,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=542, Unknown=2, NotChecked=46, Total=650 [2020-09-04 13:32:03,081 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand 26 states. [2020-09-04 13:32:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:32:07,222 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2020-09-04 13:32:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 13:32:07,224 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-09-04 13:32:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:32:07,226 INFO L225 Difference]: With dead ends: 136 [2020-09-04 13:32:07,226 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 13:32:07,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=198, Invalid=1444, Unknown=2, NotChecked=78, Total=1722 [2020-09-04 13:32:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 13:32:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2020-09-04 13:32:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 13:32:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2020-09-04 13:32:07,251 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 53 [2020-09-04 13:32:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:32:07,252 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2020-09-04 13:32:07,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 13:32:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2020-09-04 13:32:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 13:32:07,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:32:07,253 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:32:07,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:07,470 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:32:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:32:07,471 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-09-04 13:32:07,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:32:07,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611026025] [2020-09-04 13:32:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:32:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:32:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:32:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:32:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:32:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 13:32:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 13:32:07,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611026025] [2020-09-04 13:32:07,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201881993] [2020-09-04 13:32:07,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:08,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:32:08,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:32:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 35 conjunts are in the unsatisfiable core [2020-09-04 13:32:08,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:32:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 13:32:08,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:32:08,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 20 [2020-09-04 13:32:08,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955046475] [2020-09-04 13:32:08,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 13:32:08,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:32:08,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 13:32:08,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-09-04 13:32:08,170 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand 20 states. [2020-09-04 13:32:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:32:09,224 INFO L93 Difference]: Finished difference Result 161 states and 206 transitions. [2020-09-04 13:32:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 13:32:09,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 54 [2020-09-04 13:32:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:32:09,228 INFO L225 Difference]: With dead ends: 161 [2020-09-04 13:32:09,229 INFO L226 Difference]: Without dead ends: 157 [2020-09-04 13:32:09,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2020-09-04 13:32:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-04 13:32:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2020-09-04 13:32:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 13:32:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2020-09-04 13:32:09,285 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 54 [2020-09-04 13:32:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:32:09,285 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2020-09-04 13:32:09,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 13:32:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2020-09-04 13:32:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-04 13:32:09,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:32:09,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:32:09,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:09,507 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:32:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:32:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-09-04 13:32:09,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:32:09,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545152842] [2020-09-04 13:32:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:32:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:32:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:32:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:32:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:32:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 13:32:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 13:32:09,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545152842] [2020-09-04 13:32:09,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663888131] [2020-09-04 13:32:09,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:10,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-04 13:32:10,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:32:10,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 64 conjunts are in the unsatisfiable core [2020-09-04 13:32:10,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:32:10,152 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-09-04 13:32:10,153 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,160 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-09-04 13:32:10,208 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 [2020-09-04 13:32:10,209 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,224 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 [2020-09-04 13:32:10,225 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,234 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,234 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,235 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-09-04 13:32:10,293 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,294 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-09-04 13:32:10,295 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-09-04 13:32:10,379 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-09-04 13:32:10,380 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,397 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-09-04 13:32:10,398 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:32:10,410 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:32:10,410 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2020-09-04 13:32:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:32:12,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:32:12,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2020-09-04 13:32:12,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489289568] [2020-09-04 13:32:12,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-04 13:32:12,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:32:12,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-04 13:32:12,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-09-04 13:32:12,673 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand 30 states. [2020-09-04 13:32:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:32:24,609 INFO L93 Difference]: Finished difference Result 192 states and 235 transitions. [2020-09-04 13:32:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 13:32:24,612 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-09-04 13:32:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:32:24,614 INFO L225 Difference]: With dead ends: 192 [2020-09-04 13:32:24,614 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 13:32:24,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 13:32:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 13:32:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 152. [2020-09-04 13:32:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-04 13:32:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2020-09-04 13:32:24,639 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 55 [2020-09-04 13:32:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:32:24,640 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2020-09-04 13:32:24,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-04 13:32:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2020-09-04 13:32:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:32:24,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:32:24,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:32:24,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:24,856 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:32:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:32:24,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-09-04 13:32:24,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:32:24,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240166574] [2020-09-04 13:32:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:32:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:32:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:32:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:32:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:25,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 13:32:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 13:32:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:32:25,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240166574] [2020-09-04 13:32:25,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042458741] [2020-09-04 13:32:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:32:25,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:32:25,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:32:25,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:32:25,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:32:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:32:25,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:32:25,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-09-04 13:32:25,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207952230] [2020-09-04 13:32:25,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:32:25,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:32:25,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:32:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:32:25,441 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand 18 states. [2020-09-04 13:32:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:32:27,030 INFO L93 Difference]: Finished difference Result 315 states and 408 transitions. [2020-09-04 13:32:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 13:32:27,030 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-09-04 13:32:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:32:27,034 INFO L225 Difference]: With dead ends: 315 [2020-09-04 13:32:27,035 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 13:32:27,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2020-09-04 13:32:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 13:32:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 176. [2020-09-04 13:32:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 13:32:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2020-09-04 13:32:27,067 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 57 [2020-09-04 13:32:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:32:27,068 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2020-09-04 13:32:27,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:32:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2020-09-04 13:32:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:32:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:32:27,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:32:27,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:32:27,285 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:32:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:32:27,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-09-04 13:32:27,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:32:27,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917210705] [2020-09-04 13:32:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:32:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:32:27,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:32:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:32:27,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:32:27,400 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:32:27,402 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:32:27,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 13:32:27,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:32:27 BoogieIcfgContainer [2020-09-04 13:32:27,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:32:27,499 INFO L168 Benchmark]: Toolchain (without parser) took 37993.70 ms. Allocated memory was 143.1 MB in the beginning and 352.8 MB in the end (delta: 209.7 MB). Free memory was 104.3 MB in the beginning and 135.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 178.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,500 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.38 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 170.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,505 INFO L168 Benchmark]: Boogie Preprocessor took 117.67 ms. Allocated memory is still 205.5 MB. Free memory was 170.8 MB in the beginning and 167.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,505 INFO L168 Benchmark]: RCFGBuilder took 738.77 ms. Allocated memory is still 205.5 MB. Free memory was 167.8 MB in the beginning and 117.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,506 INFO L168 Benchmark]: TraceAbstraction took 36326.44 ms. Allocated memory was 205.5 MB in the beginning and 352.8 MB in the end (delta: 147.3 MB). Free memory was 116.6 MB in the beginning and 135.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 128.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:32:27,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 805.38 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 170.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.67 ms. Allocated memory is still 205.5 MB. Free memory was 170.8 MB in the beginning and 167.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 738.77 ms. Allocated memory is still 205.5 MB. Free memory was 167.8 MB in the beginning and 117.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36326.44 ms. Allocated memory was 205.5 MB in the beginning and 352.8 MB in the end (delta: 147.3 MB). Free memory was 116.6 MB in the beginning and 135.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 128.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L609] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=2, \old(until)=5, __VERIFIER_nondet_int()=0, from=2, len=2, len < until && __VERIFIER_nondet_int()=0, until=5] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L616] RET, EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); VAL [len=2, s={3:0}] [L617] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L564] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L565] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-1:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-1:0}, len=0, len--=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-2:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-2:0}, len=-1, len--=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] COND FALSE !(len-- > 0) [L573] return head; VAL [\old(len)=2, \result={-2:0}, head={-2:0}, len=-1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L617] RET, EXPR sll_create(len) VAL [len=2, s={3:0}, sll_create(len)={-2:0}] [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L609] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, __VERIFIER_nondet_int()=1, from=0, len=0, len < until && __VERIFIER_nondet_int()=1, until=1] [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, from=0, len=1, len < until && __VERIFIER_nondet_int()=0, until=1] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L618] RET, EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={3:0}] [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; VAL [i=0, k=1, len=2, s={3:0}] [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, i=0, i < k && __VERIFIER_nondet_int()=0, k=1, len=2, s={3:0}] [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={3:0}] [L625] CALL, EXPR sll_length(s) VAL [head={-2:0}] [L576] int len = 0; VAL [head={-2:0}, head={-2:0}, len=0] [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) VAL [head={-2:0}, head={0:0}, len=2] [L581] return len; VAL [\result=2, head={0:0}, head={-2:0}, len=2] [L625] RET, EXPR sll_length(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={3:0}, sll_length(s)=2] [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() VAL [i=0, k=1, len=2, s={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 527 SDtfs, 802 SDslu, 3495 SDs, 0 SdLazy, 4956 SolverSat, 358 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 361 SyntacticMatches, 9 SemanticMatches, 210 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 821 NumberOfCodeBlocks, 821 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 749 ConstructedInterpolants, 30 QuantifiedInterpolants, 300491 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1249 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 138/226 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...