/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:05:05,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:05:05,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:05:05,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:05:05,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:05:05,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:05:05,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:05:05,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:05:05,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:05:05,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:05:05,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:05:05,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:05:05,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:05:05,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:05:05,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:05:05,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:05:05,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:05:05,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:05:05,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:05:05,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:05:05,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:05:05,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:05:05,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:05:05,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:05:05,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:05:05,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:05:05,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:05:05,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:05:05,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:05:05,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:05:05,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:05:05,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:05:05,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:05:05,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:05:05,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:05:05,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:05:05,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:05:05,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:05:05,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:05:05,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:05:05,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:05:05,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:05:05,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:05:05,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:05:05,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:05:05,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:05:05,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:05:05,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:05:05,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:05:05,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:05:05,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:05:05,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:05:05,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:05:05,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:05:05,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:05:05,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:05:05,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:05:05,454 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:05:05,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:05:05,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:05:05,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:05:05,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:05:05,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:05:05,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:05:05,456 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:05:05,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:05:06,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:05:06,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:05:06,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:05:06,023 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:05:06,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2021-02-23 18:05:06,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6b027e6/9f1d6c787354463f864be4722af9cad9/FLAG0a4f12b50 [2021-02-23 18:05:06,846 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:05:06,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2021-02-23 18:05:06,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6b027e6/9f1d6c787354463f864be4722af9cad9/FLAG0a4f12b50 [2021-02-23 18:05:07,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d6b027e6/9f1d6c787354463f864be4722af9cad9 [2021-02-23 18:05:07,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:05:07,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:05:07,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:05:07,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:05:07,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:05:07,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2048fab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07, skipping insertion in model container [2021-02-23 18:05:07,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:05:07,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:05:07,667 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/splice-1.i[23721,23734] [2021-02-23 18:05:07,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:05:07,688 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:05:07,748 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/splice-1.i[23721,23734] [2021-02-23 18:05:07,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:05:07,821 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:05:07,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07 WrapperNode [2021-02-23 18:05:07,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:05:07,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:05:07,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:05:07,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:05:07,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (1/1) ... [2021-02-23 18:05:07,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:05:07,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:05:07,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:05:07,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:05:07,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (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 [2021-02-23 18:05:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:05:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:05:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:05:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:05:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:05:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:05:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:05:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:05:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 18:05:08,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:05:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:05:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:05:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:05:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:05:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:05:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:05:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:05:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:05:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:05:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:05:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:05:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:05:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:05:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:05:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:05:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:05:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:05:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:05:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:05:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:05:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:05:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:05:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:05:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:05:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:05:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:05:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:05:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:05:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:05:08,542 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 18:05:08,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:05:08,930 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 18:05:08,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:05:08 BoogieIcfgContainer [2021-02-23 18:05:08,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:05:08,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:05:08,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:05:08,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:05:08,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:05:07" (1/3) ... [2021-02-23 18:05:08,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d1f1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:05:08, skipping insertion in model container [2021-02-23 18:05:08,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:07" (2/3) ... [2021-02-23 18:05:08,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d1f1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:05:08, skipping insertion in model container [2021-02-23 18:05:08,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:05:08" (3/3) ... [2021-02-23 18:05:08,964 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2021-02-23 18:05:08,986 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:05:08,997 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:05:09,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:05:09,081 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:05:09,082 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:05:09,082 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:05:09,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:05:09,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:05:09,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:05:09,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:05:09,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:05:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2021-02-23 18:05:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 18:05:09,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:09,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:09,140 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:09,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2031810677, now seen corresponding path program 1 times [2021-02-23 18:05:09,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:09,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619389208] [2021-02-23 18:05:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:09,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:09,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:09,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:09,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619389208] [2021-02-23 18:05:09,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:09,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:05:09,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635132978] [2021-02-23 18:05:09,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:05:09,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:09,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:05:09,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:05:09,695 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2021-02-23 18:05:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:10,030 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-02-23 18:05:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:05:10,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-02-23 18:05:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:10,045 INFO L225 Difference]: With dead ends: 143 [2021-02-23 18:05:10,045 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 18:05:10,050 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 [2021-02-23 18:05:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 18:05:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-23 18:05:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-23 18:05:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2021-02-23 18:05:10,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 37 [2021-02-23 18:05:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:10,113 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2021-02-23 18:05:10,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:05:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2021-02-23 18:05:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 18:05:10,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:10,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:10,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:05:10,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash -921830062, now seen corresponding path program 1 times [2021-02-23 18:05:10,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:10,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509148810] [2021-02-23 18:05:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:10,125 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:10,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:10,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:10,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:10,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:10,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:10,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509148810] [2021-02-23 18:05:10,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:10,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:05:10,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598162169] [2021-02-23 18:05:10,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:05:10,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:05:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:05:10,418 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 6 states. [2021-02-23 18:05:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:10,772 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2021-02-23 18:05:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:05:10,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2021-02-23 18:05:10,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:10,775 INFO L225 Difference]: With dead ends: 146 [2021-02-23 18:05:10,775 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 18:05:10,777 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 [2021-02-23 18:05:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 18:05:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-02-23 18:05:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 18:05:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-02-23 18:05:10,792 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 41 [2021-02-23 18:05:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:10,793 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-02-23 18:05:10,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:05:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-02-23 18:05:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 18:05:10,795 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:10,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:10,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:05:10,796 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1623822134, now seen corresponding path program 1 times [2021-02-23 18:05:10,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:10,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870221527] [2021-02-23 18:05:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:10,854 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:10,860 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:10,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:10,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:10,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:10,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:10,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870221527] [2021-02-23 18:05:10,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:10,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:05:10,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780869836] [2021-02-23 18:05:10,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:05:10,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:10,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:05:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:05:10,958 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 4 states. [2021-02-23 18:05:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:11,235 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-02-23 18:05:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:05:11,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-23 18:05:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:11,244 INFO L225 Difference]: With dead ends: 192 [2021-02-23 18:05:11,245 INFO L226 Difference]: Without dead ends: 133 [2021-02-23 18:05:11,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:05:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-23 18:05:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2021-02-23 18:05:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-23 18:05:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-02-23 18:05:11,296 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 54 [2021-02-23 18:05:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:11,297 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-02-23 18:05:11,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:05:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-02-23 18:05:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 18:05:11,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:11,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:11,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:05:11,303 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:11,305 INFO L82 PathProgramCache]: Analyzing trace with hash 872420046, now seen corresponding path program 1 times [2021-02-23 18:05:11,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:11,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139243522] [2021-02-23 18:05:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:11,369 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:11,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:11,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:11,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:11,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:11,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:11,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:11,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:11,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139243522] [2021-02-23 18:05:11,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:11,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:05:11,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983912410] [2021-02-23 18:05:11,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:05:11,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:05:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:05:11,619 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 5 states. [2021-02-23 18:05:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:11,870 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-02-23 18:05:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:05:11,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-02-23 18:05:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:11,873 INFO L225 Difference]: With dead ends: 144 [2021-02-23 18:05:11,873 INFO L226 Difference]: Without dead ends: 125 [2021-02-23 18:05:11,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:05:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-02-23 18:05:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2021-02-23 18:05:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 18:05:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2021-02-23 18:05:11,887 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 54 [2021-02-23 18:05:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:11,888 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2021-02-23 18:05:11,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:05:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2021-02-23 18:05:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:05:11,889 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:11,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:11,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:05:11,890 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash -478097667, now seen corresponding path program 1 times [2021-02-23 18:05:11,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:11,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924640660] [2021-02-23 18:05:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:11,927 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:11,932 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:12,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:12,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:12,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:12,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:12,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:12,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:12,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:12,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:12,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:12,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:12,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924640660] [2021-02-23 18:05:12,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:12,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:05:12,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814411912] [2021-02-23 18:05:12,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:05:12,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:05:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:05:12,089 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 5 states. [2021-02-23 18:05:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:12,321 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-02-23 18:05:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:05:12,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2021-02-23 18:05:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:12,326 INFO L225 Difference]: With dead ends: 149 [2021-02-23 18:05:12,327 INFO L226 Difference]: Without dead ends: 134 [2021-02-23 18:05:12,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:05:12,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-23 18:05:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2021-02-23 18:05:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-23 18:05:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-02-23 18:05:12,363 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 56 [2021-02-23 18:05:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:12,373 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-02-23 18:05:12,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:05:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-02-23 18:05:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 18:05:12,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:12,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:05:12,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:05:12,375 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:12,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1113275188, now seen corresponding path program 1 times [2021-02-23 18:05:12,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:12,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968855937] [2021-02-23 18:05:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:12,426 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:12,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:12,506 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:12,550 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:12,621 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:05:12,621 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:05:12,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:05:12,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:05:12 BoogieIcfgContainer [2021-02-23 18:05:12,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:05:12,663 INFO L168 Benchmark]: Toolchain (without parser) took 5535.30 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 132.3 MB in the beginning and 138.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:12,664 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 157.3 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:05:12,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.17 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 108.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:12,667 INFO L168 Benchmark]: Boogie Preprocessor took 142.71 ms. Allocated memory is still 157.3 MB. Free memory was 108.9 MB in the beginning and 138.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:12,676 INFO L168 Benchmark]: RCFGBuilder took 967.33 ms. Allocated memory is still 157.3 MB. Free memory was 138.6 MB in the beginning and 89.3 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:12,681 INFO L168 Benchmark]: TraceAbstraction took 3717.99 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 88.8 MB in the beginning and 138.8 MB in the end (delta: -50.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:05:12,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 157.3 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 684.17 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 108.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.71 ms. Allocated memory is still 157.3 MB. Free memory was 108.9 MB in the beginning and 138.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 967.33 ms. Allocated memory is still 157.3 MB. Free memory was 138.6 MB in the beginning and 89.3 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3717.99 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 88.8 MB in the beginning and 138.8 MB in the end (delta: -50.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 126 SDslu, 552 SDs, 0 SdLazy, 571 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 76 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...