/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-7d8eed3 [2020-11-06 22:31:59,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:31:59,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:31:59,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:31:59,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:31:59,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:31:59,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:31:59,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:31:59,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:31:59,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:31:59,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:31:59,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:31:59,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:31:59,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:31:59,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:31:59,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:31:59,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:31:59,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:31:59,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:31:59,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:31:59,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:31:59,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:31:59,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:31:59,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:31:59,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:31:59,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:31:59,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:31:59,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:31:59,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:31:59,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:31:59,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:31:59,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:31:59,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:31:59,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:31:59,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:31:59,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:31:59,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:31:59,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:31:59,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:31:59,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:31:59,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:31:59,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:31:59,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:31:59,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:31:59,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:31:59,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:31:59,613 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:31:59,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:31:59,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:31:59,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:31:59,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:31:59,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:31:59,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:31:59,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:31:59,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:31:59,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:31:59,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:31:59,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:31:59,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:31:59,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:31:59,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:31:59,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:31:59,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:31:59,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:31:59,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:31:59,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:31:59,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:31:59,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:31:59,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:31:59,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:31:59,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:31:59,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:32:00,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:32:00,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:32:00,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:32:00,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:32:00,092 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:32:00,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-11-06 22:32:00,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f917e912d/5fe17ff51cc640199d394092f9b8a3b5/FLAG1ae31d2c0 [2020-11-06 22:32:00,884 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:32:00,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-11-06 22:32:00,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f917e912d/5fe17ff51cc640199d394092f9b8a3b5/FLAG1ae31d2c0 [2020-11-06 22:32:01,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f917e912d/5fe17ff51cc640199d394092f9b8a3b5 [2020-11-06 22:32:01,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:32:01,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:32:01,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:32:01,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:32:01,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:32:01,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd25a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01, skipping insertion in model container [2020-11-06 22:32:01,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:32:01,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:32:01,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:32:01,772 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:32:01,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:32:01,929 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:32:01,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01 WrapperNode [2020-11-06 22:32:01,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:32:01,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:32:01,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:32:01,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:32:01,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:01,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:02,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (1/1) ... [2020-11-06 22:32:02,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:32:02,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:32:02,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:32:02,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:32:02,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (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 [2020-11-06 22:32:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:32:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:32:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:32:02,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-06 22:32:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-06 22:32:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-06 22:32:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-11-06 22:32:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-11-06 22:32:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-11-06 22:32:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-11-06 22:32:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-11-06 22:32:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:32:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:32:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:32:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-06 22:32:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-06 22:32:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-06 22:32:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-06 22:32:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-06 22:32:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-06 22:32:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-06 22:32:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-06 22:32:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:32:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:32:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-06 22:32:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-06 22:32:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:32:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-06 22:32:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-06 22:32:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-06 22:32:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-06 22:32:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-06 22:32:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-06 22:32:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-06 22:32:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-06 22:32:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-06 22:32:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-06 22:32:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-06 22:32:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-11-06 22:32:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:32:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-11-06 22:32:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-11-06 22:32:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:32:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-06 22:32:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:32:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:32:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:32:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:32:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:32:02,578 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-06 22:32:02,817 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:32:02,817 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 22:32:02,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:02 BoogieIcfgContainer [2020-11-06 22:32:02,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:32:02,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:32:02,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:32:02,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:32:02,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:32:01" (1/3) ... [2020-11-06 22:32:02,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e895f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:02, skipping insertion in model container [2020-11-06 22:32:02,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:01" (2/3) ... [2020-11-06 22:32:02,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e895f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:02, skipping insertion in model container [2020-11-06 22:32:02,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:02" (3/3) ... [2020-11-06 22:32:02,836 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-11-06 22:32:02,852 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:32:02,857 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:32:02,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:32:02,903 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:32:02,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:32:02,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:32:02,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:32:02,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:32:02,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:32:02,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:32:02,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:32:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-06 22:32:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:32:02,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:02,950 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, 1, 1] [2020-11-06 22:32:02,950 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1532112468, now seen corresponding path program 1 times [2020-11-06 22:32:02,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:02,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215131839] [2020-11-06 22:32:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-06 22:32:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:32:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-06 22:32:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-06 22:32:03,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215131839] [2020-11-06 22:32:03,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:32:03,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:32:03,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977827879] [2020-11-06 22:32:03,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:32:03,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:03,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:32:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:32:03,358 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-11-06 22:32:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:03,652 INFO L93 Difference]: Finished difference Result 143 states and 194 transitions. [2020-11-06 22:32:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:32:03,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-11-06 22:32:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:03,669 INFO L225 Difference]: With dead ends: 143 [2020-11-06 22:32:03,670 INFO L226 Difference]: Without dead ends: 60 [2020-11-06 22:32:03,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:32:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-06 22:32:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-11-06 22:32:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 22:32:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-11-06 22:32:03,735 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-11-06 22:32:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:03,735 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-11-06 22:32:03,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:32:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-11-06 22:32:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-06 22:32:03,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:03,739 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, 1, 1] [2020-11-06 22:32:03,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:32:03,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash 214237475, now seen corresponding path program 1 times [2020-11-06 22:32:03,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:03,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088614681] [2020-11-06 22:32:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-06 22:32:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-06 22:32:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:32:04,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088614681] [2020-11-06 22:32:04,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399896223] [2020-11-06 22:32:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:32:04,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:04,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:32:04,454 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:32:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:32:04,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:32:04,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2020-11-06 22:32:04,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500199483] [2020-11-06 22:32:04,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:32:04,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:32:04,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:32:04,553 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2020-11-06 22:32:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:04,670 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2020-11-06 22:32:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:32:04,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-11-06 22:32:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:04,673 INFO L225 Difference]: With dead ends: 120 [2020-11-06 22:32:04,674 INFO L226 Difference]: Without dead ends: 71 [2020-11-06 22:32:04,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:32:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-06 22:32:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-11-06 22:32:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-06 22:32:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-11-06 22:32:04,693 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 46 [2020-11-06 22:32:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:04,696 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-11-06 22:32:04,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:32:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-11-06 22:32:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-06 22:32:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:04,700 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-11-06 22:32:04,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:32:04,916 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:04,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1243596773, now seen corresponding path program 1 times [2020-11-06 22:32:04,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:04,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663444923] [2020-11-06 22:32:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-06 22:32:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-06 22:32:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:32:05,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663444923] [2020-11-06 22:32:05,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669354809] [2020-11-06 22:32:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:05,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 22:32:05,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:32:05,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:32:05,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2020-11-06 22:32:05,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321150179] [2020-11-06 22:32:05,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:32:05,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:05,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:32:05,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:32:05,511 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 9 states. [2020-11-06 22:32:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:05,656 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2020-11-06 22:32:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:32:05,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-11-06 22:32:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:05,659 INFO L225 Difference]: With dead ends: 115 [2020-11-06 22:32:05,660 INFO L226 Difference]: Without dead ends: 65 [2020-11-06 22:32:05,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:32:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-06 22:32:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-06 22:32:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-06 22:32:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-11-06 22:32:05,679 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 46 [2020-11-06 22:32:05,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:05,680 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-11-06 22:32:05,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:32:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-11-06 22:32:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-06 22:32:05,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:05,682 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, 1, 1, 1, 1, 1, 1] [2020-11-06 22:32:05,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:05,897 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:05,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1794335284, now seen corresponding path program 1 times [2020-11-06 22:32:05,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:05,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791002939] [2020-11-06 22:32:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:32:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-06 22:32:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:32:06,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791002939] [2020-11-06 22:32:06,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:32:06,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-06 22:32:06,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030305739] [2020-11-06 22:32:06,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-06 22:32:06,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:06,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-06 22:32:06,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:32:06,235 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 12 states. [2020-11-06 22:32:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:06,881 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2020-11-06 22:32:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:32:06,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-11-06 22:32:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:06,885 INFO L225 Difference]: With dead ends: 88 [2020-11-06 22:32:06,885 INFO L226 Difference]: Without dead ends: 82 [2020-11-06 22:32:06,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:32:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-06 22:32:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-11-06 22:32:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-06 22:32:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2020-11-06 22:32:06,915 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 50 [2020-11-06 22:32:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:06,920 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2020-11-06 22:32:06,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-06 22:32:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2020-11-06 22:32:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-06 22:32:06,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:06,924 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:32:06,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:32:06,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1090024933, now seen corresponding path program 1 times [2020-11-06 22:32:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:06,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582404126] [2020-11-06 22:32:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:32:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-06 22:32:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:32:07,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582404126] [2020-11-06 22:32:07,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:32:07,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:32:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842955869] [2020-11-06 22:32:07,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:32:07,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:07,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:32:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:32:07,120 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 9 states. [2020-11-06 22:32:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:07,685 INFO L93 Difference]: Finished difference Result 159 states and 205 transitions. [2020-11-06 22:32:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:32:07,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-11-06 22:32:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:07,688 INFO L225 Difference]: With dead ends: 159 [2020-11-06 22:32:07,688 INFO L226 Difference]: Without dead ends: 102 [2020-11-06 22:32:07,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:32:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-06 22:32:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-11-06 22:32:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-06 22:32:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-11-06 22:32:07,723 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 51 [2020-11-06 22:32:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:07,724 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-11-06 22:32:07,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:32:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-11-06 22:32:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-06 22:32:07,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:07,725 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:32:07,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:32:07,726 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:07,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:07,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1925078685, now seen corresponding path program 1 times [2020-11-06 22:32:07,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:07,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736552074] [2020-11-06 22:32:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:32:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-06 22:32:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:32:07,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736552074] [2020-11-06 22:32:07,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59152423] [2020-11-06 22:32:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:32:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:08,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-06 22:32:08,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:32:08,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:32:08,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2020-11-06 22:32:08,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928663653] [2020-11-06 22:32:08,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-06 22:32:08,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:08,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-06 22:32:08,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:32:08,308 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 17 states. [2020-11-06 22:32:08,706 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-06 22:32:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:09,707 INFO L93 Difference]: Finished difference Result 199 states and 262 transitions. [2020-11-06 22:32:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:32:09,708 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-11-06 22:32:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:09,711 INFO L225 Difference]: With dead ends: 199 [2020-11-06 22:32:09,711 INFO L226 Difference]: Without dead ends: 127 [2020-11-06 22:32:09,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:32:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-06 22:32:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 94. [2020-11-06 22:32:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-06 22:32:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2020-11-06 22:32:09,732 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 51 [2020-11-06 22:32:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:09,733 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2020-11-06 22:32:09,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-06 22:32:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2020-11-06 22:32:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-06 22:32:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:09,735 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-06 22:32:09,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:09,949 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:09,950 INFO L82 PathProgramCache]: Analyzing trace with hash 498999574, now seen corresponding path program 2 times [2020-11-06 22:32:09,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:09,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969163995] [2020-11-06 22:32:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-06 22:32:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-06 22:32:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:32:10,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969163995] [2020-11-06 22:32:10,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271928007] [2020-11-06 22:32:10,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:32:10,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:32:10,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:32:10,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-06 22:32:10,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:10,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:32:10,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:32:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-06 22:32:10,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:32:10,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2020-11-06 22:32:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036136639] [2020-11-06 22:32:10,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-06 22:32:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-06 22:32:10,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-11-06 22:32:10,773 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand 22 states. [2020-11-06 22:32:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:12,783 INFO L93 Difference]: Finished difference Result 173 states and 217 transitions. [2020-11-06 22:32:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-06 22:32:12,787 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 55 [2020-11-06 22:32:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:12,789 INFO L225 Difference]: With dead ends: 173 [2020-11-06 22:32:12,789 INFO L226 Difference]: Without dead ends: 106 [2020-11-06 22:32:12,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2020-11-06 22:32:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-06 22:32:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2020-11-06 22:32:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-06 22:32:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2020-11-06 22:32:12,828 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 55 [2020-11-06 22:32:12,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:12,829 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2020-11-06 22:32:12,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-06 22:32:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2020-11-06 22:32:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-06 22:32:12,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:12,838 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, 1, 1] [2020-11-06 22:32:13,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:13,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1205650033, now seen corresponding path program 1 times [2020-11-06 22:32:13,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:13,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052256123] [2020-11-06 22:32:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-06 22:32:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-06 22:32:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-06 22:32:13,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052256123] [2020-11-06 22:32:13,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755472000] [2020-11-06 22:32:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:32:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-06 22:32:13,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-06 22:32:13,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:32:13,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 19 [2020-11-06 22:32:13,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285633997] [2020-11-06 22:32:13,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-06 22:32:13,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:13,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-06 22:32:13,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:32:13,766 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand 19 states. [2020-11-06 22:32:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:14,831 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2020-11-06 22:32:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 22:32:14,831 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-11-06 22:32:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:14,833 INFO L225 Difference]: With dead ends: 147 [2020-11-06 22:32:14,834 INFO L226 Difference]: Without dead ends: 141 [2020-11-06 22:32:14,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:32:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-06 22:32:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2020-11-06 22:32:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-06 22:32:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2020-11-06 22:32:14,879 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 56 [2020-11-06 22:32:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:14,879 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2020-11-06 22:32:14,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-06 22:32:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2020-11-06 22:32:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-06 22:32:14,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:14,882 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] [2020-11-06 22:32:15,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:15,098 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash -20651336, now seen corresponding path program 2 times [2020-11-06 22:32:15,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:15,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227144974] [2020-11-06 22:32:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:32:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:32:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:32:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-06 22:32:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-06 22:32:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:32:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:32:15,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227144974] [2020-11-06 22:32:15,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687219717] [2020-11-06 22:32:15,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:32:15,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:32:15,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:32:15,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-06 22:32:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:32:15,738 INFO L382 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 [2020-11-06 22:32:15,739 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,750 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,750 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-11-06 22:32:15,792 INFO L382 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 [2020-11-06 22:32:15,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,807 INFO L382 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 [2020-11-06 22:32:15,808 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,817 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,817 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-11-06 22:32:15,868 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,868 INFO L382 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 [2020-11-06 22:32:15,869 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,878 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,879 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,879 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-11-06 22:32:15,933 INFO L382 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 [2020-11-06 22:32:15,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,950 INFO L382 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 [2020-11-06 22:32:15,951 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:32:15,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:32:15,963 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2020-11-06 22:32:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:32:17,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:32:17,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2020-11-06 22:32:17,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350967113] [2020-11-06 22:32:17,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-06 22:32:17,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:32:17,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-06 22:32:17,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:32:17,653 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand 30 states. [2020-11-06 22:32:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:32:28,859 INFO L93 Difference]: Finished difference Result 194 states and 237 transitions. [2020-11-06 22:32:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-06 22:32:28,860 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2020-11-06 22:32:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:32:28,862 INFO L225 Difference]: With dead ends: 194 [2020-11-06 22:32:28,862 INFO L226 Difference]: Without dead ends: 172 [2020-11-06 22:32:28,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2020-11-06 22:32:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-06 22:32:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 153. [2020-11-06 22:32:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-11-06 22:32:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 192 transitions. [2020-11-06 22:32:28,888 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 192 transitions. Word has length 57 [2020-11-06 22:32:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:32:28,889 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 192 transitions. [2020-11-06 22:32:28,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-06 22:32:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 192 transitions. [2020-11-06 22:32:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-06 22:32:28,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:32:28,891 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, 1, 1] [2020-11-06 22:32:29,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:32:29,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:32:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:32:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash -716872415, now seen corresponding path program 1 times [2020-11-06 22:32:29,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:32:29,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976724348] [2020-11-06 22:32:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:32:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:32:29,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:32:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:32:29,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:32:29,185 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:32:29,186 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:32:29,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 22:32:29,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:32:29 BoogieIcfgContainer [2020-11-06 22:32:29,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:32:29,250 INFO L168 Benchmark]: Toolchain (without parser) took 28081.09 ms. Allocated memory was 125.8 MB in the beginning and 268.4 MB in the end (delta: 142.6 MB). Free memory was 100.3 MB in the beginning and 166.5 MB in the end (delta: -66.2 MB). Peak memory consumption was 77.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:32:29,250 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:32:29,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.73 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 76.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:32:29,252 INFO L168 Benchmark]: Boogie Preprocessor took 89.64 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 76.2 MB in the beginning and 136.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:32:29,252 INFO L168 Benchmark]: RCFGBuilder took 799.67 ms. Allocated memory is still 154.1 MB. Free memory was 136.5 MB in the beginning and 87.7 MB in the end (delta: 48.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:32:29,256 INFO L168 Benchmark]: TraceAbstraction took 26422.20 ms. Allocated memory was 154.1 MB in the beginning and 268.4 MB in the end (delta: 114.3 MB). Free memory was 87.7 MB in the beginning and 166.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:32:29,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 748.73 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 76.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.64 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 76.2 MB in the beginning and 136.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 799.67 ms. Allocated memory is still 154.1 MB. Free memory was 136.5 MB in the beginning and 87.7 MB in the end (delta: 48.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26422.20 ms. Allocated memory was 154.1 MB in the beginning and 268.4 MB in the end (delta: 114.3 MB). Free memory was 87.7 MB in the beginning and 166.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L620] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L621] len < until && __VERIFIER_nondet_int() [L621] 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] [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L627] RET, EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); VAL [len=2, s={3:0}] [L628] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L575] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L576] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L576] COND TRUE len-- > 0 [L577] 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}] [L578] 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}] [L581] new_head->next = head [L582] head = new_head VAL [\old(len)=2, head={-1:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L576] EXPR len-- VAL [\old(len)=2, head={-1:0}, len=0, len--=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L576] COND TRUE len-- > 0 [L577] 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}] [L578] 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}] [L581] new_head->next = head [L582] head = new_head VAL [\old(len)=2, head={-2:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L576] EXPR len-- VAL [\old(len)=2, head={-2:0}, len=-1, len--=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L576] COND FALSE !(len-- > 0) [L584] return head; VAL [\old(len)=2, \result={-2:0}, head={-2:0}, len=-1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L628] RET, EXPR sll_create(len) VAL [len=2, s={3:0}, sll_create(len)={-2:0}] [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L620] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L621] len < until && __VERIFIER_nondet_int() [L621] 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] [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L621] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, from=0, len=1, len < until && __VERIFIER_nondet_int()=0, until=1] [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L629] RET, EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={3:0}] [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; VAL [i=0, k=1, len=2, s={3:0}] [L631] i < k && __VERIFIER_nondet_int() [L631] 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}] [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={3:0}] [L636] CALL, EXPR sll_length(s) VAL [head={-2:0}] [L587] int len = 0; VAL [head={-2:0}, head={-2:0}, len=0] [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) VAL [head={0:0}, head={-2:0}, len=2] [L592] return len; VAL [\result=2, head={-2:0}, head={0:0}, len=2] [L636] RET, EXPR sll_length(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={3:0}, sll_length(s)=2] [L636] COND TRUE k + len != sll_length(s) [L641] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_nondet_insert-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 723 SDslu, 3021 SDs, 0 SdLazy, 3962 SolverSat, 319 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 568 GetRequests, 362 SyntacticMatches, 6 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred 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, 136 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 821 NumberOfCodeBlocks, 821 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 747 ConstructedInterpolants, 16 QuantifiedInterpolants, 282616 SizeOfPredicates, 43 NumberOfNonLiveVariables, 1433 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 109/182 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...