/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:28:25,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:28:25,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:28:25,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:28:25,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:28:25,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:28:25,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:28:25,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:28:25,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:28:25,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:28:25,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:28:25,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:28:25,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:28:25,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:28:25,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:28:25,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:28:25,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:28:25,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:28:25,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:28:25,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:28:25,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:28:25,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:28:25,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:28:25,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:28:25,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:28:25,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:28:25,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:28:25,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:28:25,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:28:25,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:28:25,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:28:25,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:28:25,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:28:25,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:28:25,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:28:25,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:28:25,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:28:25,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:28:25,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:28:25,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:28:25,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:28:25,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:28:25,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:28:25,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:28:25,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:28:25,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:28:25,572 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:28:25,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:28:25,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:28:25,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:28:25,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:28:25,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:28:25,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:28:25,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:28:25,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:28:25,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:28:25,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:28:25,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:28:25,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:28:25,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:28:25,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:28:25,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:28:25,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:28:25,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:28:25,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:28:25,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:28:25,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:28:25,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:28:25,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:25,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:28:25,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:28:25,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:28:25,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:28:25,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:28:25,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:28:25,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:28:25,990 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:28:25,993 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-07-20 11:28:26,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff2ff541/3ff2b081b3da471fafaf54ca99c558ad/FLAGa69045cc3 [2020-07-20 11:28:26,796 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:28:26,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-07-20 11:28:26,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff2ff541/3ff2b081b3da471fafaf54ca99c558ad/FLAGa69045cc3 [2020-07-20 11:28:27,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff2ff541/3ff2b081b3da471fafaf54ca99c558ad [2020-07-20 11:28:27,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:28:27,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:28:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:28:27,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:28:27,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:28:27,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3990f262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27, skipping insertion in model container [2020-07-20 11:28:27,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:28:27,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:28:27,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:28:27,721 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:28:27,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:28:27,863 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:28:27,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27 WrapperNode [2020-07-20 11:28:27,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:28:27,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:28:27,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:28:27,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:28:27,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... [2020-07-20 11:28:27,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:28:27,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:28:27,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:28:27,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:28:27,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:28:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:28:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:28:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 11:28:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 11:28:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-20 11:28:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-20 11:28:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-20 11:28:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 11:28:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:28:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:28:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:28:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 11:28:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 11:28:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 11:28:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 11:28:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 11:28:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 11:28:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 11:28:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 11:28:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-20 11:28:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 11:28:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 11:28:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 11:28:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 11:28:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 11:28:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 11:28:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 11:28:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 11:28:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 11:28:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 11:28:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 11:28:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 11:28:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 11:28:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 11:28:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 11:28:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 11:28:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 11:28:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 11:28:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 11:28:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 11:28:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 11:28:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 11:28:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 11:28:28,058 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 11:28:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 11:28:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 11:28:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 11:28:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 11:28:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 11:28:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 11:28:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 11:28:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 11:28:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:28:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:28:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:28:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:28:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:28:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:28:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:28:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:28:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:28:28,583 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 11:28:28,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:28:28,812 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 11:28:28,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:28 BoogieIcfgContainer [2020-07-20 11:28:28,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:28:28,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:28:28,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:28:28,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:28:28,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:28:27" (1/3) ... [2020-07-20 11:28:28,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590e9435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:28, skipping insertion in model container [2020-07-20 11:28:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:27" (2/3) ... [2020-07-20 11:28:28,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590e9435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:28, skipping insertion in model container [2020-07-20 11:28:28,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:28" (3/3) ... [2020-07-20 11:28:28,831 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-07-20 11:28:28,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:28:28,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:28:28,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:28:28,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:28:28,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:28:28,908 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:28:28,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:28:28,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:28:28,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:28:28,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:28:28,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:28:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-20 11:28:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:28:28,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:28,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:28:28,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:28,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash 661731879, now seen corresponding path program 1 times [2020-07-20 11:28:28,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:28,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194222098] [2020-07-20 11:28:28,967 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:28:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:28:29,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:28:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:28:29,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:28:29,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194222098] [2020-07-20 11:28:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:28:29,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:28:29,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900945377] [2020-07-20 11:28:29,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:28:29,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:28:29,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:28:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:28:29,269 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-20 11:28:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:28:29,308 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2020-07-20 11:28:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:28:29,310 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-20 11:28:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:28:29,322 INFO L225 Difference]: With dead ends: 54 [2020-07-20 11:28:29,322 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 11:28:29,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:28:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 11:28:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-20 11:28:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 11:28:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-07-20 11:28:29,385 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2020-07-20 11:28:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:28:29,386 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-07-20 11:28:29,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:28:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-07-20 11:28:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:28:29,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:29,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:28:29,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:29,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1973627133, now seen corresponding path program 1 times [2020-07-20 11:28:29,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:29,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976044493] [2020-07-20 11:28:29,607 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:28:29,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 11:28:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:28:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:28:29,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:28:29,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976044493] [2020-07-20 11:28:29,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:28:29,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:28:29,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849660494] [2020-07-20 11:28:29,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:28:29,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:28:29,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:28:29,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:28:29,841 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2020-07-20 11:28:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:28:29,990 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-07-20 11:28:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:28:29,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-20 11:28:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:28:29,996 INFO L225 Difference]: With dead ends: 44 [2020-07-20 11:28:29,996 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 11:28:30,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:28:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 11:28:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-07-20 11:28:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 11:28:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-20 11:28:30,022 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2020-07-20 11:28:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:28:30,023 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-20 11:28:30,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:28:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-07-20 11:28:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:28:30,028 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:30,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:28:30,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:30,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1721544590, now seen corresponding path program 1 times [2020-07-20 11:28:30,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:30,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120846121] [2020-07-20 11:28:30,248 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:28:30,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 11:28:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:28:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:28:30,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:28:30,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120846121] [2020-07-20 11:28:30,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:28:30,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:28:30,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027782113] [2020-07-20 11:28:30,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:28:30,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:28:30,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:28:30,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:28:30,401 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2020-07-20 11:28:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:28:30,481 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-07-20 11:28:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:28:30,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-20 11:28:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:28:30,486 INFO L225 Difference]: With dead ends: 51 [2020-07-20 11:28:30,486 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 11:28:30,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:28:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 11:28:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-20 11:28:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 11:28:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-07-20 11:28:30,498 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20 [2020-07-20 11:28:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:28:30,499 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-07-20 11:28:30,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:28:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-07-20 11:28:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 11:28:30,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:30,501 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:28:30,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:30,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:30,714 INFO L82 PathProgramCache]: Analyzing trace with hash -918584693, now seen corresponding path program 1 times [2020-07-20 11:28:30,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:30,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734716537] [2020-07-20 11:28:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:28:30,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:28:30,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:28:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:28:30,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:28:30,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734716537] [2020-07-20 11:28:30,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:28:30,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:28:30,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259455948] [2020-07-20 11:28:30,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:28:30,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:28:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:28:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:28:30,920 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 4 states. [2020-07-20 11:28:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:28:31,010 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2020-07-20 11:28:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:28:31,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-20 11:28:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:28:31,012 INFO L225 Difference]: With dead ends: 74 [2020-07-20 11:28:31,013 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 11:28:31,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:28:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 11:28:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-07-20 11:28:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 11:28:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-07-20 11:28:31,024 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21 [2020-07-20 11:28:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:28:31,025 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-07-20 11:28:31,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:28:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2020-07-20 11:28:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:28:31,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:31,027 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 11:28:31,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:31,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash -743556192, now seen corresponding path program 1 times [2020-07-20 11:28:31,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:31,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449072445] [2020-07-20 11:28:31,237 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:28:31,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:28:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:28:31,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:28:31,497 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:28:31,497 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:28:31,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:31,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:28:31 BoogieIcfgContainer [2020-07-20 11:28:31,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:28:31,784 INFO L168 Benchmark]: Toolchain (without parser) took 4729.61 ms. Allocated memory was 144.2 MB in the beginning and 251.1 MB in the end (delta: 107.0 MB). Free memory was 101.3 MB in the beginning and 185.6 MB in the end (delta: -84.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:31,785 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:28:31,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.76 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 169.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:31,787 INFO L168 Benchmark]: Boogie Preprocessor took 79.18 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:31,788 INFO L168 Benchmark]: RCFGBuilder took 873.90 ms. Allocated memory is still 202.9 MB. Free memory was 166.6 MB in the beginning and 119.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:31,789 INFO L168 Benchmark]: TraceAbstraction took 2960.18 ms. Allocated memory was 202.9 MB in the beginning and 251.1 MB in the end (delta: 48.2 MB). Free memory was 119.8 MB in the beginning and 185.6 MB in the end (delta: -65.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:28:31,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.76 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 100.8 MB in the beginning and 169.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.18 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 873.90 ms. Allocated memory is still 202.9 MB. Free memory was 166.6 MB in the beginning and 119.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2960.18 ms. Allocated memory was 202.9 MB in the beginning and 251.1 MB in the end (delta: 48.2 MB). Free memory was 119.8 MB in the beginning and 185.6 MB in the end (delta: -65.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L523] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, t={282:0}] [L539] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, t={282:0}] [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={282:0}, t={282:0}] [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, t={282:0}] [L549] EXPR p->h VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, p->h=1, t={282:0}] [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={282:0}, t={-1:0}] [L549] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={282:0}, p->h=3, t={-1:0}] [L549] COND FALSE !(p->h != 3) [L562] p = l1 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, t={-1:0}] [L563] COND TRUE p != 0 [L564] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, p->h=1, t={-1:0}] [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={282:0}, p={-1:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 23 SDslu, 134 SDs, 0 SdLazy, 69 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 2767 SizeOfPredicates, 13 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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...