/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 19:04:59,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 19:04:59,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 19:04:59,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 19:04:59,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 19:04:59,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 19:04:59,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 19:04:59,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 19:04:59,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 19:04:59,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 19:04:59,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 19:04:59,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 19:04:59,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 19:04:59,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 19:04:59,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 19:04:59,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 19:04:59,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 19:04:59,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 19:04:59,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 19:04:59,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 19:04:59,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 19:04:59,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 19:04:59,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 19:04:59,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 19:04:59,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 19:04:59,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 19:04:59,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 19:04:59,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 19:04:59,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 19:04:59,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 19:04:59,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 19:04:59,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 19:04:59,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 19:04:59,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 19:04:59,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 19:04:59,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 19:04:59,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 19:04:59,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 19:04:59,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 19:04:59,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 19:04:59,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 19:04:59,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 19:04:59,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 19:04:59,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 19:04:59,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 19:04:59,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 19:04:59,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 19:04:59,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 19:04:59,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 19:04:59,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 19:04:59,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 19:04:59,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 19:04:59,611 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 19:04:59,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 19:04:59,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 19:04:59,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 19:04:59,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 19:04:59,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 19:04:59,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 19:04:59,613 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 19:04:59,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 19:04:59,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 19:04:59,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 19:04:59,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 19:04:59,912 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 19:04:59,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-10 19:04:59,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81bd30fa8/a05caaa41fe84126b0e53724e331ec2d/FLAG02572f081 [2020-07-10 19:05:00,597 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 19:05:00,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-10 19:05:00,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81bd30fa8/a05caaa41fe84126b0e53724e331ec2d/FLAG02572f081 [2020-07-10 19:05:00,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81bd30fa8/a05caaa41fe84126b0e53724e331ec2d [2020-07-10 19:05:00,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 19:05:00,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 19:05:00,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 19:05:00,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 19:05:00,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 19:05:00,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:05:00" (1/1) ... [2020-07-10 19:05:00,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbc0375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:00, skipping insertion in model container [2020-07-10 19:05:00,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:05:00" (1/1) ... [2020-07-10 19:05:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 19:05:00,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 19:05:01,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:05:01,409 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 19:05:01,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:05:01,527 INFO L208 MainTranslator]: Completed translation [2020-07-10 19:05:01,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01 WrapperNode [2020-07-10 19:05:01,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 19:05:01,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 19:05:01,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 19:05:01,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 19:05:01,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... [2020-07-10 19:05:01,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 19:05:01,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 19:05:01,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 19:05:01,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 19:05:01,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 19:05:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 19:05:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 19:05:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2020-07-10 19:05:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 19:05:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-10 19:05:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-10 19:05:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-10 19:05:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-10 19:05:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-10 19:05:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-10 19:05:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-10 19:05:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-10 19:05:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-10 19:05:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-10 19:05:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-10 19:05:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-10 19:05:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-10 19:05:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-10 19:05:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-10 19:05:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-10 19:05:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-10 19:05:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-10 19:05:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-10 19:05:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-10 19:05:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-10 19:05:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-10 19:05:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-10 19:05:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-10 19:05:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-10 19:05:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-10 19:05:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-10 19:05:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-10 19:05:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-10 19:05:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-10 19:05:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-10 19:05:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-10 19:05:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-10 19:05:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-10 19:05:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-10 19:05:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-10 19:05:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-10 19:05:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-10 19:05:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-10 19:05:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-10 19:05:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-10 19:05:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-10 19:05:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-10 19:05:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-10 19:05:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-10 19:05:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-10 19:05:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-10 19:05:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-10 19:05:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-10 19:05:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-10 19:05:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-10 19:05:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-10 19:05:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-10 19:05:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-10 19:05:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 19:05:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 19:05:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-10 19:05:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-10 19:05:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 19:05:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 19:05:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-10 19:05:02,049 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-10 19:05:02,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 19:05:02,412 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-10 19:05:02,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:05:02 BoogieIcfgContainer [2020-07-10 19:05:02,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 19:05:02,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 19:05:02,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 19:05:02,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 19:05:02,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 07:05:00" (1/3) ... [2020-07-10 19:05:02,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98a2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:05:02, skipping insertion in model container [2020-07-10 19:05:02,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:05:01" (2/3) ... [2020-07-10 19:05:02,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98a2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:05:02, skipping insertion in model container [2020-07-10 19:05:02,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:05:02" (3/3) ... [2020-07-10 19:05:02,429 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2020-07-10 19:05:02,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 19:05:02,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 19:05:02,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 19:05:02,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 19:05:02,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 19:05:02,492 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 19:05:02,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 19:05:02,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 19:05:02,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 19:05:02,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 19:05:02,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 19:05:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-07-10 19:05:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-10 19:05:02,523 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 19:05:02,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 19:05:02,525 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 19:05:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 19:05:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1551017908, now seen corresponding path program 1 times [2020-07-10 19:05:02,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 19:05:02,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973493679] [2020-07-10 19:05:02,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 19:05:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:02,852 INFO L280 TraceCheckUtils]: 0: Hoare triple {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {78#true} is VALID [2020-07-10 19:05:02,852 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#true} #valid := #valid[0 := 0]; {78#true} is VALID [2020-07-10 19:05:02,853 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} assume 0 < #StackHeapBarrier; {78#true} is VALID [2020-07-10 19:05:02,854 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-10 19:05:02,854 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {78#true} {78#true} #120#return; {78#true} is VALID [2020-07-10 19:05:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:02,899 INFO L280 TraceCheckUtils]: 0: Hoare triple {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {78#true} is VALID [2020-07-10 19:05:02,899 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#true} ~data := #in~data; {78#true} is VALID [2020-07-10 19:05:02,899 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} ~head~0.base, ~head~0.offset := 0, 0; {78#true} is VALID [2020-07-10 19:05:02,900 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume !(~len > 0); {78#true} is VALID [2020-07-10 19:05:02,900 INFO L280 TraceCheckUtils]: 4: Hoare triple {78#true} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {78#true} is VALID [2020-07-10 19:05:02,900 INFO L280 TraceCheckUtils]: 5: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-10 19:05:02,902 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {78#true} {85#(<= 2 main_~len~0)} #116#return; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,904 INFO L263 TraceCheckUtils]: 0: Hoare triple {78#true} call ULTIMATE.init(); {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 19:05:02,904 INFO L280 TraceCheckUtils]: 1: Hoare triple {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {78#true} is VALID [2020-07-10 19:05:02,905 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} #valid := #valid[0 := 0]; {78#true} is VALID [2020-07-10 19:05:02,905 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume 0 < #StackHeapBarrier; {78#true} is VALID [2020-07-10 19:05:02,905 INFO L280 TraceCheckUtils]: 4: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-10 19:05:02,906 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {78#true} {78#true} #120#return; {78#true} is VALID [2020-07-10 19:05:02,906 INFO L263 TraceCheckUtils]: 6: Hoare triple {78#true} call #t~ret11 := main(); {78#true} is VALID [2020-07-10 19:05:02,910 INFO L280 TraceCheckUtils]: 7: Hoare triple {78#true} ~len~0 := 2; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,911 INFO L280 TraceCheckUtils]: 8: Hoare triple {85#(<= 2 main_~len~0)} ~data~0 := 1; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,912 INFO L280 TraceCheckUtils]: 9: Hoare triple {85#(<= 2 main_~len~0)} SUMMARY for call ~#s~0.base, ~#s~0.offset := #Ultimate.allocOnStack(4); srcloc: L589 {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,915 INFO L263 TraceCheckUtils]: 10: Hoare triple {85#(<= 2 main_~len~0)} call #t~ret8.base, #t~ret8.offset := sll_create(~len~0, ~data~0); {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-10 19:05:02,915 INFO L280 TraceCheckUtils]: 11: Hoare triple {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {78#true} is VALID [2020-07-10 19:05:02,915 INFO L280 TraceCheckUtils]: 12: Hoare triple {78#true} ~data := #in~data; {78#true} is VALID [2020-07-10 19:05:02,916 INFO L280 TraceCheckUtils]: 13: Hoare triple {78#true} ~head~0.base, ~head~0.offset := 0, 0; {78#true} is VALID [2020-07-10 19:05:02,916 INFO L280 TraceCheckUtils]: 14: Hoare triple {78#true} assume !(~len > 0); {78#true} is VALID [2020-07-10 19:05:02,916 INFO L280 TraceCheckUtils]: 15: Hoare triple {78#true} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {78#true} is VALID [2020-07-10 19:05:02,917 INFO L280 TraceCheckUtils]: 16: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-10 19:05:02,920 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {78#true} {85#(<= 2 main_~len~0)} #116#return; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,922 INFO L280 TraceCheckUtils]: 18: Hoare triple {85#(<= 2 main_~len~0)} SUMMARY for call write~init~$Pointer$(#t~ret8.base, #t~ret8.offset, ~#s~0.base, ~#s~0.offset, 4); srcloc: L589-2 {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,924 INFO L280 TraceCheckUtils]: 19: Hoare triple {85#(<= 2 main_~len~0)} havoc #t~ret8.base, #t~ret8.offset; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,926 INFO L280 TraceCheckUtils]: 20: Hoare triple {85#(<= 2 main_~len~0)} havoc ~i~0; {85#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:02,928 INFO L280 TraceCheckUtils]: 21: Hoare triple {85#(<= 2 main_~len~0)} ~i~0 := ~len~0 - 1; {93#(<= 1 main_~i~0)} is VALID [2020-07-10 19:05:02,929 INFO L280 TraceCheckUtils]: 22: Hoare triple {93#(<= 1 main_~i~0)} assume !(~i~0 >= 0); {79#false} is VALID [2020-07-10 19:05:02,930 INFO L280 TraceCheckUtils]: 23: Hoare triple {79#false} SUMMARY for call #t~mem10.base, #t~mem10.offset := read~$Pointer$(~#s~0.base, ~#s~0.offset, 4); srcloc: L591-6 {79#false} is VALID [2020-07-10 19:05:02,930 INFO L280 TraceCheckUtils]: 24: Hoare triple {79#false} assume 0 != #t~mem10.base || 0 != #t~mem10.offset; {79#false} is VALID [2020-07-10 19:05:02,931 INFO L280 TraceCheckUtils]: 25: Hoare triple {79#false} havoc #t~mem10.base, #t~mem10.offset; {79#false} is VALID [2020-07-10 19:05:02,931 INFO L280 TraceCheckUtils]: 26: Hoare triple {79#false} assume !false; {79#false} is VALID [2020-07-10 19:05:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 19:05:02,936 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 19:05:02,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973493679] [2020-07-10 19:05:02,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 19:05:02,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 19:05:02,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595688320] [2020-07-10 19:05:02,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-10 19:05:02,951 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 19:05:02,956 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 19:05:03,006 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:03,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 19:05:03,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 19:05:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 19:05:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 19:05:03,019 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 6 states. [2020-07-10 19:05:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:03,943 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2020-07-10 19:05:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 19:05:03,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-10 19:05:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 19:05:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 19:05:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2020-07-10 19:05:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 19:05:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2020-07-10 19:05:03,969 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 134 transitions. [2020-07-10 19:05:04,165 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 134 edges. 134 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:04,196 INFO L225 Difference]: With dead ends: 121 [2020-07-10 19:05:04,196 INFO L226 Difference]: Without dead ends: 70 [2020-07-10 19:05:04,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-10 19:05:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-10 19:05:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-07-10 19:05:04,356 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 19:05:04,356 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 62 states. [2020-07-10 19:05:04,357 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 62 states. [2020-07-10 19:05:04,357 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 62 states. [2020-07-10 19:05:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:04,366 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-07-10 19:05:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-07-10 19:05:04,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:05:04,367 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:05:04,368 INFO L74 IsIncluded]: Start isIncluded. First operand 62 states. Second operand 70 states. [2020-07-10 19:05:04,368 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 70 states. [2020-07-10 19:05:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:04,375 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-07-10 19:05:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-07-10 19:05:04,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:05:04,377 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:05:04,377 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 19:05:04,377 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 19:05:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-10 19:05:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-07-10 19:05:04,383 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 27 [2020-07-10 19:05:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 19:05:04,384 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-07-10 19:05:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 19:05:04,384 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 62 states and 63 transitions. [2020-07-10 19:05:04,464 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-07-10 19:05:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-10 19:05:04,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 19:05:04,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 19:05:04,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 19:05:04,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 19:05:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 19:05:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash 624461213, now seen corresponding path program 1 times [2020-07-10 19:05:04,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 19:05:04,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809124227] [2020-07-10 19:05:04,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 19:05:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:04,580 INFO L280 TraceCheckUtils]: 0: Hoare triple {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {611#true} is VALID [2020-07-10 19:05:04,580 INFO L280 TraceCheckUtils]: 1: Hoare triple {611#true} #valid := #valid[0 := 0]; {611#true} is VALID [2020-07-10 19:05:04,580 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} assume 0 < #StackHeapBarrier; {611#true} is VALID [2020-07-10 19:05:04,581 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-10 19:05:04,581 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {611#true} {611#true} #120#return; {611#true} is VALID [2020-07-10 19:05:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:04,673 INFO L280 TraceCheckUtils]: 0: Hoare triple {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,674 INFO L280 TraceCheckUtils]: 1: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~data := #in~data; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,675 INFO L280 TraceCheckUtils]: 2: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~head~0.base, ~head~0.offset := 0, 0; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,675 INFO L280 TraceCheckUtils]: 3: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} assume !(~len > 0); {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,676 INFO L280 TraceCheckUtils]: 4: Hoare triple {641#(<= |sll_create_#in~len| 0)} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,677 INFO L280 TraceCheckUtils]: 5: Hoare triple {641#(<= |sll_create_#in~len| 0)} assume true; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,679 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {641#(<= |sll_create_#in~len| 0)} {618#(<= 2 main_~len~0)} #116#return; {612#false} is VALID [2020-07-10 19:05:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:05:04,717 INFO L280 TraceCheckUtils]: 0: Hoare triple {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~head.base, ~head.offset := #in~head.base, #in~head.offset; {611#true} is VALID [2020-07-10 19:05:04,717 INFO L280 TraceCheckUtils]: 1: Hoare triple {611#true} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L582 {611#true} is VALID [2020-07-10 19:05:04,718 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(#t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L582-1 {611#true} is VALID [2020-07-10 19:05:04,718 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} ~temp~1.base, ~temp~1.offset := #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-10 19:05:04,718 INFO L280 TraceCheckUtils]: 4: Hoare triple {611#true} havoc #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-10 19:05:04,719 INFO L280 TraceCheckUtils]: 5: Hoare triple {611#true} havoc #t~mem5.base, #t~mem5.offset; {611#true} is VALID [2020-07-10 19:05:04,719 INFO L280 TraceCheckUtils]: 6: Hoare triple {611#true} SUMMARY for call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L583 {611#true} is VALID [2020-07-10 19:05:04,719 INFO L280 TraceCheckUtils]: 7: Hoare triple {611#true} SUMMARY for call ULTIMATE.dealloc(#t~mem7.base, #t~mem7.offset); srcloc: L583-1 {611#true} is VALID [2020-07-10 19:05:04,720 INFO L280 TraceCheckUtils]: 8: Hoare triple {611#true} havoc #t~mem7.base, #t~mem7.offset; {611#true} is VALID [2020-07-10 19:05:04,720 INFO L280 TraceCheckUtils]: 9: Hoare triple {611#true} SUMMARY for call write~$Pointer$(~temp~1.base, ~temp~1.offset, ~head.base, ~head.offset, 4); srcloc: L584 {611#true} is VALID [2020-07-10 19:05:04,720 INFO L280 TraceCheckUtils]: 10: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-10 19:05:04,721 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {611#true} {612#false} #118#return; {612#false} is VALID [2020-07-10 19:05:04,722 INFO L263 TraceCheckUtils]: 0: Hoare triple {611#true} call ULTIMATE.init(); {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 19:05:04,722 INFO L280 TraceCheckUtils]: 1: Hoare triple {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {611#true} is VALID [2020-07-10 19:05:04,722 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} #valid := #valid[0 := 0]; {611#true} is VALID [2020-07-10 19:05:04,723 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} assume 0 < #StackHeapBarrier; {611#true} is VALID [2020-07-10 19:05:04,723 INFO L280 TraceCheckUtils]: 4: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-10 19:05:04,723 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {611#true} {611#true} #120#return; {611#true} is VALID [2020-07-10 19:05:04,724 INFO L263 TraceCheckUtils]: 6: Hoare triple {611#true} call #t~ret11 := main(); {611#true} is VALID [2020-07-10 19:05:04,725 INFO L280 TraceCheckUtils]: 7: Hoare triple {611#true} ~len~0 := 2; {618#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:04,728 INFO L280 TraceCheckUtils]: 8: Hoare triple {618#(<= 2 main_~len~0)} ~data~0 := 1; {618#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:04,729 INFO L280 TraceCheckUtils]: 9: Hoare triple {618#(<= 2 main_~len~0)} SUMMARY for call ~#s~0.base, ~#s~0.offset := #Ultimate.allocOnStack(4); srcloc: L589 {618#(<= 2 main_~len~0)} is VALID [2020-07-10 19:05:04,731 INFO L263 TraceCheckUtils]: 10: Hoare triple {618#(<= 2 main_~len~0)} call #t~ret8.base, #t~ret8.offset := sll_create(~len~0, ~data~0); {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-10 19:05:04,732 INFO L280 TraceCheckUtils]: 11: Hoare triple {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,732 INFO L280 TraceCheckUtils]: 12: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~data := #in~data; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,733 INFO L280 TraceCheckUtils]: 13: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~head~0.base, ~head~0.offset := 0, 0; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-10 19:05:04,734 INFO L280 TraceCheckUtils]: 14: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} assume !(~len > 0); {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,734 INFO L280 TraceCheckUtils]: 15: Hoare triple {641#(<= |sll_create_#in~len| 0)} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,735 INFO L280 TraceCheckUtils]: 16: Hoare triple {641#(<= |sll_create_#in~len| 0)} assume true; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-10 19:05:04,737 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {641#(<= |sll_create_#in~len| 0)} {618#(<= 2 main_~len~0)} #116#return; {612#false} is VALID [2020-07-10 19:05:04,737 INFO L280 TraceCheckUtils]: 18: Hoare triple {612#false} SUMMARY for call write~init~$Pointer$(#t~ret8.base, #t~ret8.offset, ~#s~0.base, ~#s~0.offset, 4); srcloc: L589-2 {612#false} is VALID [2020-07-10 19:05:04,737 INFO L280 TraceCheckUtils]: 19: Hoare triple {612#false} havoc #t~ret8.base, #t~ret8.offset; {612#false} is VALID [2020-07-10 19:05:04,738 INFO L280 TraceCheckUtils]: 20: Hoare triple {612#false} havoc ~i~0; {612#false} is VALID [2020-07-10 19:05:04,738 INFO L280 TraceCheckUtils]: 21: Hoare triple {612#false} ~i~0 := ~len~0 - 1; {612#false} is VALID [2020-07-10 19:05:04,738 INFO L280 TraceCheckUtils]: 22: Hoare triple {612#false} assume !!(~i~0 >= 0); {612#false} is VALID [2020-07-10 19:05:04,738 INFO L263 TraceCheckUtils]: 23: Hoare triple {612#false} call sll_remove_first(~#s~0.base, ~#s~0.offset); {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-10 19:05:04,739 INFO L280 TraceCheckUtils]: 24: Hoare triple {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~head.base, ~head.offset := #in~head.base, #in~head.offset; {611#true} is VALID [2020-07-10 19:05:04,739 INFO L280 TraceCheckUtils]: 25: Hoare triple {611#true} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L582 {611#true} is VALID [2020-07-10 19:05:04,739 INFO L280 TraceCheckUtils]: 26: Hoare triple {611#true} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(#t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L582-1 {611#true} is VALID [2020-07-10 19:05:04,740 INFO L280 TraceCheckUtils]: 27: Hoare triple {611#true} ~temp~1.base, ~temp~1.offset := #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-10 19:05:04,740 INFO L280 TraceCheckUtils]: 28: Hoare triple {611#true} havoc #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-10 19:05:04,740 INFO L280 TraceCheckUtils]: 29: Hoare triple {611#true} havoc #t~mem5.base, #t~mem5.offset; {611#true} is VALID [2020-07-10 19:05:04,740 INFO L280 TraceCheckUtils]: 30: Hoare triple {611#true} SUMMARY for call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L583 {611#true} is VALID [2020-07-10 19:05:04,741 INFO L280 TraceCheckUtils]: 31: Hoare triple {611#true} SUMMARY for call ULTIMATE.dealloc(#t~mem7.base, #t~mem7.offset); srcloc: L583-1 {611#true} is VALID [2020-07-10 19:05:04,741 INFO L280 TraceCheckUtils]: 32: Hoare triple {611#true} havoc #t~mem7.base, #t~mem7.offset; {611#true} is VALID [2020-07-10 19:05:04,741 INFO L280 TraceCheckUtils]: 33: Hoare triple {611#true} SUMMARY for call write~$Pointer$(~temp~1.base, ~temp~1.offset, ~head.base, ~head.offset, 4); srcloc: L584 {611#true} is VALID [2020-07-10 19:05:04,741 INFO L280 TraceCheckUtils]: 34: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-10 19:05:04,742 INFO L275 TraceCheckUtils]: 35: Hoare quadruple {611#true} {612#false} #118#return; {612#false} is VALID [2020-07-10 19:05:04,742 INFO L280 TraceCheckUtils]: 36: Hoare triple {612#false} #t~post9 := ~i~0; {612#false} is VALID [2020-07-10 19:05:04,742 INFO L280 TraceCheckUtils]: 37: Hoare triple {612#false} ~i~0 := #t~post9 - 1; {612#false} is VALID [2020-07-10 19:05:04,743 INFO L280 TraceCheckUtils]: 38: Hoare triple {612#false} havoc #t~post9; {612#false} is VALID [2020-07-10 19:05:04,743 INFO L280 TraceCheckUtils]: 39: Hoare triple {612#false} assume !(~i~0 >= 0); {612#false} is VALID [2020-07-10 19:05:04,743 INFO L280 TraceCheckUtils]: 40: Hoare triple {612#false} SUMMARY for call #t~mem10.base, #t~mem10.offset := read~$Pointer$(~#s~0.base, ~#s~0.offset, 4); srcloc: L591-6 {612#false} is VALID [2020-07-10 19:05:04,743 INFO L280 TraceCheckUtils]: 41: Hoare triple {612#false} assume 0 != #t~mem10.base || 0 != #t~mem10.offset; {612#false} is VALID [2020-07-10 19:05:04,744 INFO L280 TraceCheckUtils]: 42: Hoare triple {612#false} havoc #t~mem10.base, #t~mem10.offset; {612#false} is VALID [2020-07-10 19:05:04,744 INFO L280 TraceCheckUtils]: 43: Hoare triple {612#false} assume !false; {612#false} is VALID [2020-07-10 19:05:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 19:05:04,747 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 19:05:04,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809124227] [2020-07-10 19:05:04,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 19:05:04,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-10 19:05:04,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159465747] [2020-07-10 19:05:04,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-10 19:05:04,750 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 19:05:04,750 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-10 19:05:04,797 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:04,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-10 19:05:04,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 19:05:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-10 19:05:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-10 19:05:04,799 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 8 states. [2020-07-10 19:05:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:05,632 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-07-10 19:05:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-10 19:05:05,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-10 19:05:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 19:05:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-10 19:05:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2020-07-10 19:05:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-10 19:05:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2020-07-10 19:05:05,641 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 101 transitions. [2020-07-10 19:05:05,821 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 101 edges. 101 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:05,828 INFO L225 Difference]: With dead ends: 100 [2020-07-10 19:05:05,828 INFO L226 Difference]: Without dead ends: 70 [2020-07-10 19:05:05,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-07-10 19:05:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-10 19:05:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-10 19:05:05,921 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 19:05:05,921 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 63 states. [2020-07-10 19:05:05,922 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 63 states. [2020-07-10 19:05:05,922 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 63 states. [2020-07-10 19:05:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:05,931 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-07-10 19:05:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-07-10 19:05:05,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:05:05,932 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:05:05,932 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 70 states. [2020-07-10 19:05:05,932 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 70 states. [2020-07-10 19:05:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:05:05,946 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-07-10 19:05:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-07-10 19:05:05,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:05:05,950 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:05:05,950 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 19:05:05,950 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 19:05:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-10 19:05:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-07-10 19:05:05,955 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 44 [2020-07-10 19:05:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 19:05:05,955 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-07-10 19:05:05,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-10 19:05:05,956 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 63 states and 64 transitions. [2020-07-10 19:05:06,065 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:05:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-07-10 19:05:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-10 19:05:06,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 19:05:06,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 19:05:06,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 19:05:06,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 19:05:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 19:05:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1157296683, now seen corresponding path program 1 times [2020-07-10 19:05:06,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 19:05:06,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529932683] [2020-07-10 19:05:06,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 19:05:06,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-10 19:05:06,116 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 19:05:06,122 INFO L168 Benchmark]: Toolchain (without parser) took 5283.25 ms. Allocated memory was 143.1 MB in the beginning and 287.8 MB in the end (delta: 144.7 MB). Free memory was 100.3 MB in the beginning and 202.5 MB in the end (delta: -102.2 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-07-10 19:05:06,123 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-10 19:05:06,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.05 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 99.9 MB in the beginning and 166.7 MB in the end (delta: -66.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-10 19:05:06,125 INFO L168 Benchmark]: Boogie Preprocessor took 69.94 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-10 19:05:06,125 INFO L168 Benchmark]: RCFGBuilder took 819.36 ms. Allocated memory is still 201.9 MB. Free memory was 163.3 MB in the beginning and 103.6 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-10 19:05:06,126 INFO L168 Benchmark]: TraceAbstraction took 3698.40 ms. Allocated memory was 201.9 MB in the beginning and 287.8 MB in the end (delta: 86.0 MB). Free memory was 103.6 MB in the beginning and 202.5 MB in the end (delta: -98.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 19:05:06,131 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.05 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 99.9 MB in the beginning and 166.7 MB in the end (delta: -66.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.94 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 819.36 ms. Allocated memory is still 201.9 MB. Free memory was 163.3 MB in the beginning and 103.6 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3698.40 ms. Allocated memory was 201.9 MB in the beginning and 287.8 MB in the end (delta: 86.0 MB). Free memory was 103.6 MB in the beginning and 202.5 MB in the end (delta: -98.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...