/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-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:09:11,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:09:11,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:09:11,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:09:11,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:09:11,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:09:11,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:09:11,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:09:11,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:09:11,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:09:11,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:09:11,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:09:11,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:09:11,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:09:11,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:09:11,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:09:11,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:09:11,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:09:11,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:09:11,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:09:11,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:09:11,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:09:11,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:09:11,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:09:11,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:09:11,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:09:11,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:09:11,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:09:11,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:09:11,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:09:11,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:09:11,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:09:11,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:09:11,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:09:11,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:09:11,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:09:11,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:09:11,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:09:11,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:09:11,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:09:11,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:09:11,460 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 [2021-02-21 16:09:11,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:09:11,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:09:11,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:09:11,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:09:11,521 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:09:11,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:09:11,522 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:09:11,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:09:11,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:09:11,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:09:11,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:09:11,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:09:11,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:09:11,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:09:11,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:09:11,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:09:11,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:09:11,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:09:11,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:09:11,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:09:11,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:09:11,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:09:11,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:09:11,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:09:11,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:09:11,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:09:11,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:09:11,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:09:11,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:09:11,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:09:12,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:09:12,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:09:12,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:09:12,011 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:09:12,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-21 16:09:12,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a3605e/bc1268c931814306954ea34fd5e38655/FLAGc19b40973 [2021-02-21 16:09:12,874 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:09:12,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-21 16:09:12,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a3605e/bc1268c931814306954ea34fd5e38655/FLAGc19b40973 [2021-02-21 16:09:13,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d01a3605e/bc1268c931814306954ea34fd5e38655 [2021-02-21 16:09:13,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:09:13,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:09:13,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:13,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:09:13,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:09:13,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422b6a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13, skipping insertion in model container [2021-02-21 16:09:13,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:09:13,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:09:13,561 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-21 16:09:13,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:13,589 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:09:13,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-21 16:09:13,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:13,779 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:09:13,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13 WrapperNode [2021-02-21 16:09:13,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:13,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:09:13,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:09:13,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:09:13,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (1/1) ... [2021-02-21 16:09:13,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:09:13,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:09:13,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:09:13,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:09:13,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (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 [2021-02-21 16:09:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:09:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:09:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 16:09:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:09:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:09:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:09:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 16:09:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:09:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:09:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:09:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:09:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:09:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:09:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:09:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:09:13,992 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:09:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:09:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:09:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:09:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:09:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:09:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:09:14,550 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 16:09:14,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:09:14,798 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 16:09:14,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:14 BoogieIcfgContainer [2021-02-21 16:09:14,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:09:14,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:09:14,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:09:14,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:09:14,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:09:13" (1/3) ... [2021-02-21 16:09:14,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cdd676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:14, skipping insertion in model container [2021-02-21 16:09:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:13" (2/3) ... [2021-02-21 16:09:14,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cdd676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:14, skipping insertion in model container [2021-02-21 16:09:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:14" (3/3) ... [2021-02-21 16:09:14,810 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-21 16:09:14,817 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:09:14,823 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:09:14,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:09:14,876 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:09:14,877 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:09:14,877 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:09:14,877 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:09:14,877 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:09:14,877 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:09:14,877 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:09:14,878 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:09:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-02-21 16:09:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-21 16:09:14,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:14,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:14,966 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1162983228, now seen corresponding path program 1 times [2021-02-21 16:09:15,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:15,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322573665] [2021-02-21 16:09:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:15,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:15,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:15,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322573665] [2021-02-21 16:09:15,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:15,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:09:15,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317918068] [2021-02-21 16:09:15,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:09:15,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:09:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:15,446 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2021-02-21 16:09:15,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:15,580 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-02-21 16:09:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:09:15,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-21 16:09:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:15,593 INFO L225 Difference]: With dead ends: 38 [2021-02-21 16:09:15,593 INFO L226 Difference]: Without dead ends: 18 [2021-02-21 16:09:15,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-21 16:09:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-21 16:09:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-21 16:09:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-02-21 16:09:15,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-02-21 16:09:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:15,634 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-02-21 16:09:15,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:09:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-02-21 16:09:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:09:15,636 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:15,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:15,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:09:15,636 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1250104141, now seen corresponding path program 1 times [2021-02-21 16:09:15,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:15,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777693119] [2021-02-21 16:09:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:15,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:15,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:15,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:15,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:15,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:15,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777693119] [2021-02-21 16:09:15,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:15,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:09:15,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045751989] [2021-02-21 16:09:15,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:09:15,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:09:15,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:09:15,777 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2021-02-21 16:09:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:15,896 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-02-21 16:09:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:09:15,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-21 16:09:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:15,898 INFO L225 Difference]: With dead ends: 33 [2021-02-21 16:09:15,898 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 16:09:15,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:09:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 16:09:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-02-21 16:09:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-21 16:09:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-02-21 16:09:15,914 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-02-21 16:09:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:15,915 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-02-21 16:09:15,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:09:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-02-21 16:09:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:09:15,916 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:15,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:15,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:09:15,917 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash 195866160, now seen corresponding path program 1 times [2021-02-21 16:09:15,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:15,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342197059] [2021-02-21 16:09:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:15,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:15,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:15,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,017 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-21 16:09:16,018 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-21 16:09:16,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:16,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:16,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342197059] [2021-02-21 16:09:16,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992830805] [2021-02-21 16:09:16,110 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 [2021-02-21 16:09:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:16,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-02-21 16:09:16,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:09:16,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:09:16,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-21 16:09:16,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 16:09:16,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:09:16,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:09:16,622 INFO L388 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 [2021-02-21 16:09:16,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,638 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,649 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,654 INFO L388 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 [2021-02-21 16:09:16,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,660 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:09:16,671 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,672 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2021-02-21 16:09:16,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:09:16,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:09:16,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:09:16,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 16:09:16,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 16:09:16,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 16:09:16,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 16:09:16,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:09:16,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:09:16,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:09:16,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:09:16,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:09:16,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 16:09:16,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 16:09:16,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-02-21 16:09:16,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:09:16,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,760 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-02-21 16:09:16,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:09:16,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:09:16,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,782 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-02-21 16:09:16,782 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-02-21 16:09:16,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:09:16,786 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-21 16:09:16,787 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-21 16:09:16,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:16,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:16,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:09:16,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-02-21 16:09:16,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496774057] [2021-02-21 16:09:16,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:09:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:09:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:09:16,798 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2021-02-21 16:09:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:16,921 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-02-21 16:09:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:09:16,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-02-21 16:09:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:16,924 INFO L225 Difference]: With dead ends: 37 [2021-02-21 16:09:16,924 INFO L226 Difference]: Without dead ends: 27 [2021-02-21 16:09:16,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-21 16:09:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-21 16:09:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-02-21 16:09:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-02-21 16:09:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-02-21 16:09:16,937 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-02-21 16:09:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:16,940 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-02-21 16:09:16,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:09:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-02-21 16:09:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-21 16:09:16,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:16,942 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:17,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-21 16:09:17,144 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash 933230324, now seen corresponding path program 1 times [2021-02-21 16:09:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:17,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002149935] [2021-02-21 16:09:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:09:17,181 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:09:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:09:17,216 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:09:17,246 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:09:17,247 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:09:17,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:09:17,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:09:17 BoogieIcfgContainer [2021-02-21 16:09:17,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:09:17,295 INFO L168 Benchmark]: Toolchain (without parser) took 4183.83 ms. Allocated memory was 164.6 MB in the beginning and 215.0 MB in the end (delta: 50.3 MB). Free memory was 138.6 MB in the beginning and 133.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:17,295 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 164.6 MB. Free memory was 138.1 MB in the beginning and 138.0 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:09:17,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.25 ms. Allocated memory is still 164.6 MB. Free memory was 137.5 MB in the beginning and 115.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:17,296 INFO L168 Benchmark]: Boogie Preprocessor took 89.95 ms. Allocated memory is still 164.6 MB. Free memory was 115.6 MB in the beginning and 113.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:17,296 INFO L168 Benchmark]: RCFGBuilder took 927.83 ms. Allocated memory is still 164.6 MB. Free memory was 113.2 MB in the beginning and 73.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:17,301 INFO L168 Benchmark]: TraceAbstraction took 2488.25 ms. Allocated memory was 164.6 MB in the beginning and 215.0 MB in the end (delta: 50.3 MB). Free memory was 73.0 MB in the beginning and 133.0 MB in the end (delta: -60.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:09:17,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 164.6 MB. Free memory was 138.1 MB in the beginning and 138.0 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 652.25 ms. Allocated memory is still 164.6 MB. Free memory was 137.5 MB in the beginning and 115.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.95 ms. Allocated memory is still 164.6 MB. Free memory was 115.6 MB in the beginning and 113.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 927.83 ms. Allocated memory is still 164.6 MB. Free memory was 113.2 MB in the beginning and 73.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2488.25 ms. Allocated memory was 164.6 MB in the beginning and 215.0 MB in the end (delta: 50.3 MB). Free memory was 73.0 MB in the beginning and 133.0 MB in the end (delta: -60.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L540] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L548] COND TRUE p->h != 2 [L549] reach_error() VAL [a={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 41 SDslu, 73 SDs, 0 SdLazy, 122 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 5347 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...