/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/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:04:06,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:04:06,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:04:06,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:04:06,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:04:06,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:04:06,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:04:06,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:04:06,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:04:06,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:04:06,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:04:06,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:04:06,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:04:06,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:04:06,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:04:06,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:04:06,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:04:06,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:04:06,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:04:06,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:04:06,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:04:06,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:04:06,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:04:06,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:04:06,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:04:06,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:04:06,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:04:06,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:04:06,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:04:06,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:04:06,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:04:06,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:04:06,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:04:06,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:04:06,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:04:06,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:04:06,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:04:06,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:04:06,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:04:06,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:04:06,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:04:06,449 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 18:04:06,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:04:06,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:04:06,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:04:06,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:04:06,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:04:06,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:04:06,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:04:06,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:04:06,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:04:06,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:04:06,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:04:06,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:04:06,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:04:06,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:04:06,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:04:06,468 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:04:06,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:04:06,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:04:06,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:04:06,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:04:06,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:04:06,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:04:06,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:04:06,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:04:06,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:04:06,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:04:06,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:04:06,930 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:04:06,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2021-02-23 18:04:07,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b891ff52c/e6832601bfbd414d87309cc2aa37c336/FLAGa390fcf61 [2021-02-23 18:04:07,710 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:04:07,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2021-02-23 18:04:07,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b891ff52c/e6832601bfbd414d87309cc2aa37c336/FLAGa390fcf61 [2021-02-23 18:04:08,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b891ff52c/e6832601bfbd414d87309cc2aa37c336 [2021-02-23 18:04:08,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:04:08,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:04:08,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:08,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:04:08,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:04:08,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26670142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08, skipping insertion in model container [2021-02-23 18:04:08,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:04:08,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:04:08,495 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/list-2.i[23408,23421] [2021-02-23 18:04:08,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:08,514 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:04:08,590 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/list-2.i[23408,23421] [2021-02-23 18:04:08,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:08,663 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:04:08,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08 WrapperNode [2021-02-23 18:04:08,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:08,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:04:08,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:04:08,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:04:08,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (1/1) ... [2021-02-23 18:04:08,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:04:08,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:04:08,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:04:08,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:04:08,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (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 18:04:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:04:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:04:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 18:04:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:04:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:04:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:04:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:04:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:04:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:04:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:04:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:04:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:04:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:04:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:04:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:04:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:04:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:04:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:04:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:04:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:04:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:04:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:04:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:04:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:04:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:04:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:04:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:04:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:04:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:04:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:04:09,440 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 18:04:09,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:04:09,623 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 18:04:09,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:09 BoogieIcfgContainer [2021-02-23 18:04:09,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:04:09,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:04:09,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:04:09,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:04:09,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:04:08" (1/3) ... [2021-02-23 18:04:09,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6fffdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:09, skipping insertion in model container [2021-02-23 18:04:09,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:08" (2/3) ... [2021-02-23 18:04:09,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6fffdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:09, skipping insertion in model container [2021-02-23 18:04:09,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:09" (3/3) ... [2021-02-23 18:04:09,646 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2021-02-23 18:04:09,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:04:09,670 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:04:09,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:04:09,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:04:09,714 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:04:09,714 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:04:09,714 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:04:09,715 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:04:09,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:04:09,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:04:09,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:04:09,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-23 18:04:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 18:04:09,744 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:09,745 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] [2021-02-23 18:04:09,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:09,752 INFO L82 PathProgramCache]: Analyzing trace with hash -461049234, now seen corresponding path program 1 times [2021-02-23 18:04:09,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:09,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967026084] [2021-02-23 18:04:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:09,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:09,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:09,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:09,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:09,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:10,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,059 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 18:04:10,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967026084] [2021-02-23 18:04:10,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:10,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:04:10,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454539849] [2021-02-23 18:04:10,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:04:10,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:04:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:04:10,107 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-23 18:04:10,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:10,355 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-02-23 18:04:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:04:10,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-23 18:04:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:10,366 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:04:10,366 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:04:10,370 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 18:04:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:04:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 18:04:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 18:04:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-23 18:04:10,421 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 26 [2021-02-23 18:04:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:10,422 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-23 18:04:10,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:04:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-23 18:04:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:04:10,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:10,424 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] [2021-02-23 18:04:10,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:04:10,425 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash 39557614, now seen corresponding path program 1 times [2021-02-23 18:04:10,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:10,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474080961] [2021-02-23 18:04:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:10,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:10,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:10,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:10,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,595 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 18:04:10,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474080961] [2021-02-23 18:04:10,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:10,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:10,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141982850] [2021-02-23 18:04:10,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:10,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:10,599 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 7 states. [2021-02-23 18:04:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:10,843 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2021-02-23 18:04:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:04:10,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-02-23 18:04:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:10,847 INFO L225 Difference]: With dead ends: 138 [2021-02-23 18:04:10,847 INFO L226 Difference]: Without dead ends: 132 [2021-02-23 18:04:10,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-23 18:04:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 74. [2021-02-23 18:04:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:04:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-23 18:04:10,864 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2021-02-23 18:04:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:10,864 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-23 18:04:10,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-23 18:04:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:04:10,866 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:10,866 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] [2021-02-23 18:04:10,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:04:10,866 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1904476042, now seen corresponding path program 1 times [2021-02-23 18:04:10,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:10,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799564231] [2021-02-23 18:04:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:10,893 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:10,897 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:10,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:10,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:10,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:10,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:10,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:11,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,027 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 18:04:11,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799564231] [2021-02-23 18:04:11,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:11,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:11,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330722785] [2021-02-23 18:04:11,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:11,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:11,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:11,030 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 7 states. [2021-02-23 18:04:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:11,284 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2021-02-23 18:04:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:04:11,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-23 18:04:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:11,286 INFO L225 Difference]: With dead ends: 141 [2021-02-23 18:04:11,287 INFO L226 Difference]: Without dead ends: 122 [2021-02-23 18:04:11,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-02-23 18:04:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2021-02-23 18:04:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:04:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-02-23 18:04:11,298 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 40 [2021-02-23 18:04:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:11,299 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-02-23 18:04:11,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-02-23 18:04:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:04:11,300 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:11,301 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] [2021-02-23 18:04:11,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:04:11,301 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1353809478, now seen corresponding path program 1 times [2021-02-23 18:04:11,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:11,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421445054] [2021-02-23 18:04:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:11,306 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:11,312 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:11,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:11,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:11,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:11,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:11,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:11,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,488 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 18:04:11,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421445054] [2021-02-23 18:04:11,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:11,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:11,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131931097] [2021-02-23 18:04:11,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:11,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:11,495 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 7 states. [2021-02-23 18:04:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:11,699 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-02-23 18:04:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:04:11,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-23 18:04:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:11,704 INFO L225 Difference]: With dead ends: 119 [2021-02-23 18:04:11,704 INFO L226 Difference]: Without dead ends: 99 [2021-02-23 18:04:11,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-23 18:04:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 66. [2021-02-23 18:04:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 18:04:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-23 18:04:11,728 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 40 [2021-02-23 18:04:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:11,728 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-23 18:04:11,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-23 18:04:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:04:11,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:11,735 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] [2021-02-23 18:04:11,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:04:11,735 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:11,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1775920989, now seen corresponding path program 1 times [2021-02-23 18:04:11,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:11,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402463563] [2021-02-23 18:04:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:11,764 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:11,767 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:11,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:11,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:11,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:11,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:11,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:11,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:11,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:11,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:04:11,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:11,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:11,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:11,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:11,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:11,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:12,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:12,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:12,059 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 18:04:12,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402463563] [2021-02-23 18:04:12,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:12,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:04:12,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853336332] [2021-02-23 18:04:12,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:04:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:04:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:04:12,062 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 15 states. [2021-02-23 18:04:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:12,783 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2021-02-23 18:04:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:12,784 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-02-23 18:04:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:12,785 INFO L225 Difference]: With dead ends: 148 [2021-02-23 18:04:12,785 INFO L226 Difference]: Without dead ends: 135 [2021-02-23 18:04:12,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:04:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-23 18:04:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 82. [2021-02-23 18:04:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 18:04:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-02-23 18:04:12,801 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 45 [2021-02-23 18:04:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:12,802 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-02-23 18:04:12,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:04:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-02-23 18:04:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:04:12,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:12,803 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] [2021-02-23 18:04:12,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:04:12,804 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash -76304527, now seen corresponding path program 1 times [2021-02-23 18:04:12,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:12,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874648618] [2021-02-23 18:04:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:12,822 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:12,825 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:12,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:12,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:12,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:12,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:12,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:12,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:12,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:12,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:04:12,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:12,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:13,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:13,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:13,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:13,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:13,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:13,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:13,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:13,131 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 18:04:13,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874648618] [2021-02-23 18:04:13,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:13,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:04:13,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772557771] [2021-02-23 18:04:13,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:04:13,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:04:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:04:13,135 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 15 states. [2021-02-23 18:04:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:14,143 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-02-23 18:04:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:14,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-02-23 18:04:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:14,150 INFO L225 Difference]: With dead ends: 164 [2021-02-23 18:04:14,150 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 18:04:14,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:04:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 18:04:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 104. [2021-02-23 18:04:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-23 18:04:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-02-23 18:04:14,172 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 45 [2021-02-23 18:04:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:14,172 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-02-23 18:04:14,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:04:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-02-23 18:04:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 18:04:14,174 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:14,174 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] [2021-02-23 18:04:14,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:04:14,174 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1024942955, now seen corresponding path program 1 times [2021-02-23 18:04:14,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:14,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839667606] [2021-02-23 18:04:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:14,195 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:14,198 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:14,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:14,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:14,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:14,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:14,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:14,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:14,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:04:14,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:14,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:14,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:14,416 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:04:14,417 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:04:14,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:14,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:14,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:14,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:14,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:14,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:14,580 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 18:04:14,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839667606] [2021-02-23 18:04:14,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:14,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:04:14,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968891678] [2021-02-23 18:04:14,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:04:14,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:14,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:04:14,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:04:14,583 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2021-02-23 18:04:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:15,689 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-02-23 18:04:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:15,690 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2021-02-23 18:04:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:15,692 INFO L225 Difference]: With dead ends: 169 [2021-02-23 18:04:15,692 INFO L226 Difference]: Without dead ends: 163 [2021-02-23 18:04:15,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-02-23 18:04:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-02-23 18:04:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 108. [2021-02-23 18:04:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 18:04:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-02-23 18:04:15,715 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 51 [2021-02-23 18:04:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:15,716 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-02-23 18:04:15,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:04:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-02-23 18:04:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 18:04:15,717 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:15,717 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] [2021-02-23 18:04:15,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:04:15,718 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:15,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1245751225, now seen corresponding path program 1 times [2021-02-23 18:04:15,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:15,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603355640] [2021-02-23 18:04:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:15,735 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:15,739 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:15,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:15,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:15,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:04:15,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:15,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:15,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:15,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:04:15,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:04:15,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:04:15,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:15,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:15,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:15,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:15,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:15,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:15,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:15,986 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 18:04:15,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603355640] [2021-02-23 18:04:15,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:15,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:04:15,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669908931] [2021-02-23 18:04:15,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:04:15,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:15,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:04:15,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:04:15,989 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 15 states. [2021-02-23 18:04:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:16,740 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2021-02-23 18:04:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 18:04:16,740 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2021-02-23 18:04:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:16,742 INFO L225 Difference]: With dead ends: 176 [2021-02-23 18:04:16,742 INFO L226 Difference]: Without dead ends: 157 [2021-02-23 18:04:16,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-02-23 18:04:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-23 18:04:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2021-02-23 18:04:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-02-23 18:04:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2021-02-23 18:04:16,763 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 51 [2021-02-23 18:04:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:16,764 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2021-02-23 18:04:16,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:04:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2021-02-23 18:04:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 18:04:16,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:16,765 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] [2021-02-23 18:04:16,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:04:16,765 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash 209069449, now seen corresponding path program 1 times [2021-02-23 18:04:16,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:16,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032144604] [2021-02-23 18:04:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:16,783 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:16,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:16,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:16,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:16,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:16,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:16,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:16,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:16,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:04:16,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:16,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:16,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:16,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:16,984 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:04:16,985 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:04:17,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:17,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:17,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:17,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:17,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:17,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:17,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:17,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:17,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:17,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:17,130 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 18:04:17,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032144604] [2021-02-23 18:04:17,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:17,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:04:17,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977607741] [2021-02-23 18:04:17,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:04:17,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:17,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:04:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:04:17,133 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 16 states. [2021-02-23 18:04:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:18,224 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-02-23 18:04:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:18,225 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2021-02-23 18:04:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:18,226 INFO L225 Difference]: With dead ends: 173 [2021-02-23 18:04:18,226 INFO L226 Difference]: Without dead ends: 167 [2021-02-23 18:04:18,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-02-23 18:04:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-23 18:04:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2021-02-23 18:04:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-23 18:04:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2021-02-23 18:04:18,249 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 51 [2021-02-23 18:04:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:18,249 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2021-02-23 18:04:18,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:04:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2021-02-23 18:04:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:04:18,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:18,251 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:18,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:04:18,251 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:18,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1385511218, now seen corresponding path program 2 times [2021-02-23 18:04:18,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:18,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556109207] [2021-02-23 18:04:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:18,290 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:18,293 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:18,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:18,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:18,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:18,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:18,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:18,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:18,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:18,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:18,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:04:18,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:18,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:18,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:18,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:18,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:18,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:18,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:18,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:18,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:18,909 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 18:04:18,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556109207] [2021-02-23 18:04:18,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:18,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:04:18,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707103915] [2021-02-23 18:04:18,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:04:18,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:04:18,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:04:18,911 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand 22 states. [2021-02-23 18:04:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:21,028 INFO L93 Difference]: Finished difference Result 198 states and 210 transitions. [2021-02-23 18:04:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-23 18:04:21,029 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2021-02-23 18:04:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:21,031 INFO L225 Difference]: With dead ends: 198 [2021-02-23 18:04:21,031 INFO L226 Difference]: Without dead ends: 192 [2021-02-23 18:04:21,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=530, Invalid=2226, Unknown=0, NotChecked=0, Total=2756 [2021-02-23 18:04:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-02-23 18:04:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 131. [2021-02-23 18:04:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-23 18:04:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2021-02-23 18:04:21,071 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 56 [2021-02-23 18:04:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:21,071 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2021-02-23 18:04:21,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:04:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2021-02-23 18:04:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:04:21,072 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:21,072 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] [2021-02-23 18:04:21,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:04:21,072 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash 8782656, now seen corresponding path program 1 times [2021-02-23 18:04:21,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:21,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098080677] [2021-02-23 18:04:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:21,088 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:21,091 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:21,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:21,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:21,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:21,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:21,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:21,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:21,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:21,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:21,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:04:21,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:21,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:21,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:21,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:21,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:21,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:21,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:21,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:21,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:21,659 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 18:04:21,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098080677] [2021-02-23 18:04:21,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:21,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:04:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188468266] [2021-02-23 18:04:21,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:04:21,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:04:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:04:21,662 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand 22 states. [2021-02-23 18:04:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:23,983 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2021-02-23 18:04:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-23 18:04:23,984 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2021-02-23 18:04:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:23,986 INFO L225 Difference]: With dead ends: 232 [2021-02-23 18:04:23,986 INFO L226 Difference]: Without dead ends: 226 [2021-02-23 18:04:23,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2021-02-23 18:04:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-23 18:04:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 143. [2021-02-23 18:04:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-23 18:04:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-02-23 18:04:24,014 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 56 [2021-02-23 18:04:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:24,014 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-02-23 18:04:24,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:04:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-02-23 18:04:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:04:24,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:24,016 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:24,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:04:24,016 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 703068211, now seen corresponding path program 2 times [2021-02-23 18:04:24,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:24,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163493841] [2021-02-23 18:04:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:24,036 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:24,040 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:24,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:24,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:24,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:24,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:24,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:24,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:24,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:04:24,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:24,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:24,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:24,225 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:04:24,226 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:04:24,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:24,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:24,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:24,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:24,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:24,381 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 18:04:24,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163493841] [2021-02-23 18:04:24,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:24,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:04:24,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908745666] [2021-02-23 18:04:24,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:04:24,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:04:24,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:04:24,383 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 16 states. [2021-02-23 18:04:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:25,506 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2021-02-23 18:04:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 18:04:25,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-23 18:04:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:25,508 INFO L225 Difference]: With dead ends: 209 [2021-02-23 18:04:25,509 INFO L226 Difference]: Without dead ends: 190 [2021-02-23 18:04:25,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-02-23 18:04:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-23 18:04:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2021-02-23 18:04:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-02-23 18:04:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-02-23 18:04:25,535 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 57 [2021-02-23 18:04:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:25,535 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-02-23 18:04:25,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:04:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-02-23 18:04:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:04:25,536 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:25,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:25,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 18:04:25,536 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash -333613565, now seen corresponding path program 1 times [2021-02-23 18:04:25,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:25,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262209137] [2021-02-23 18:04:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:25,553 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:25,559 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:25,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:25,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:25,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:25,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:25,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:25,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:25,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:04:25,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:25,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:25,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:25,772 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:04:25,773 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:04:25,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:25,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:25,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:25,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:25,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:25,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:25,918 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 18:04:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262209137] [2021-02-23 18:04:25,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:25,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:04:25,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491011848] [2021-02-23 18:04:25,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:04:25,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:25,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:04:25,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:04:25,920 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand 16 states. [2021-02-23 18:04:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:26,890 INFO L93 Difference]: Finished difference Result 187 states and 198 transitions. [2021-02-23 18:04:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 18:04:26,890 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-23 18:04:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:26,892 INFO L225 Difference]: With dead ends: 187 [2021-02-23 18:04:26,892 INFO L226 Difference]: Without dead ends: 161 [2021-02-23 18:04:26,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:04:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-02-23 18:04:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2021-02-23 18:04:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-23 18:04:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2021-02-23 18:04:26,919 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 57 [2021-02-23 18:04:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:26,920 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2021-02-23 18:04:26,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:04:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2021-02-23 18:04:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:04:26,921 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:26,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:26,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 18:04:26,921 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash -388126303, now seen corresponding path program 2 times [2021-02-23 18:04:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:26,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370028978] [2021-02-23 18:04:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:26,943 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:26,946 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:27,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:27,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:27,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:27,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:27,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:27,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:04:27,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:04:27,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:27,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:27,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:27,157 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:04:27,158 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:04:27,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:27,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:27,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:27,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:27,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:27,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:27,323 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 18:04:27,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370028978] [2021-02-23 18:04:27,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:27,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:04:27,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486599213] [2021-02-23 18:04:27,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:04:27,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:27,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:04:27,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:04:27,325 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 16 states. [2021-02-23 18:04:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:28,402 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2021-02-23 18:04:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 18:04:28,403 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-23 18:04:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:28,404 INFO L225 Difference]: With dead ends: 173 [2021-02-23 18:04:28,405 INFO L226 Difference]: Without dead ends: 147 [2021-02-23 18:04:28,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:04:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-23 18:04:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2021-02-23 18:04:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-02-23 18:04:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-02-23 18:04:28,426 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 57 [2021-02-23 18:04:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:28,427 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-02-23 18:04:28,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:04:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-02-23 18:04:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:04:28,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:28,428 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:28,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 18:04:28,428 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:28,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1307444566, now seen corresponding path program 3 times [2021-02-23 18:04:28,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:28,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783230028] [2021-02-23 18:04:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:28,464 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:28,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:28,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:28,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:28,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:28,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:28,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:28,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:04:28,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:04:28,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:28,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:28,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:04:28,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 18:04:28,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-23 18:04:28,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-23 18:04:28,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:04:28,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-23 18:04:28,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:28,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:28,946 WARN L141 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size [2021-02-23 18:04:28,947 WARN L147 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size 27 [2021-02-23 18:04:28,976 WARN L141 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-02-23 18:04:28,977 WARN L147 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size 23 [2021-02-23 18:04:29,015 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-23 18:04:29,016 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-23 18:04:29,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:29,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:29,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:29,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:29,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:29,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:29,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:29,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:29,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:29,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:29,227 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 18:04:29,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783230028] [2021-02-23 18:04:29,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:29,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 18:04:29,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336792468] [2021-02-23 18:04:29,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 18:04:29,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 18:04:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-02-23 18:04:29,230 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 24 states. [2021-02-23 18:04:30,539 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-02-23 18:04:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:32,035 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2021-02-23 18:04:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-23 18:04:32,035 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2021-02-23 18:04:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:32,037 INFO L225 Difference]: With dead ends: 208 [2021-02-23 18:04:32,037 INFO L226 Difference]: Without dead ends: 195 [2021-02-23 18:04:32,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=451, Invalid=2629, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 18:04:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-02-23 18:04:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2021-02-23 18:04:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-23 18:04:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2021-02-23 18:04:32,066 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 62 [2021-02-23 18:04:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:32,066 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2021-02-23 18:04:32,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 18:04:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2021-02-23 18:04:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:04:32,067 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:32,068 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:32,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 18:04:32,068 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:32,068 INFO L82 PathProgramCache]: Analyzing trace with hash 270762790, now seen corresponding path program 1 times [2021-02-23 18:04:32,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:32,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239998562] [2021-02-23 18:04:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:32,094 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:32,098 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:32,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:32,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:32,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:32,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:32,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:32,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:32,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:32,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:32,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:04:32,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:32,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:32,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:32,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:32,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:32,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:32,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:32,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:32,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:32,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:32,681 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 18:04:32,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239998562] [2021-02-23 18:04:32,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:32,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:04:32,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920190883] [2021-02-23 18:04:32,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:04:32,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:04:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:04:32,683 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 22 states. [2021-02-23 18:04:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:34,603 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2021-02-23 18:04:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-23 18:04:34,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2021-02-23 18:04:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:34,604 INFO L225 Difference]: With dead ends: 201 [2021-02-23 18:04:34,605 INFO L226 Difference]: Without dead ends: 186 [2021-02-23 18:04:34,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 18:04:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-02-23 18:04:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2021-02-23 18:04:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-23 18:04:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2021-02-23 18:04:34,634 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 62 [2021-02-23 18:04:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:34,634 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2021-02-23 18:04:34,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:04:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2021-02-23 18:04:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:04:34,635 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:34,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:34,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 18:04:34,635 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 624075848, now seen corresponding path program 1 times [2021-02-23 18:04:34,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:34,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63923965] [2021-02-23 18:04:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:34,650 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:34,655 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:34,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:34,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:34,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:04:34,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:34,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:04:34,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:34,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:04:34,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:04:34,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:34,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:34,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:34,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:34,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:34,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:04:34,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:04:34,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:04:34,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:34,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:35,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:35,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:04:35,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:35,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:35,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:35,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:35,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:35,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:35,131 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 18:04:35,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63923965] [2021-02-23 18:04:35,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:35,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 18:04:35,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239111380] [2021-02-23 18:04:35,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 18:04:35,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:35,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 18:04:35,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:04:35,133 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 20 states. [2021-02-23 18:04:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:36,814 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2021-02-23 18:04:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:04:36,815 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2021-02-23 18:04:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:36,817 INFO L225 Difference]: With dead ends: 207 [2021-02-23 18:04:36,817 INFO L226 Difference]: Without dead ends: 188 [2021-02-23 18:04:36,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 18:04:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-02-23 18:04:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2021-02-23 18:04:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-23 18:04:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-02-23 18:04:36,849 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 62 [2021-02-23 18:04:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:36,850 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-02-23 18:04:36,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 18:04:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-02-23 18:04:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:04:36,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:36,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:04:36,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 18:04:36,851 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:36,852 INFO L82 PathProgramCache]: Analyzing trace with hash -412605928, now seen corresponding path program 1 times [2021-02-23 18:04:36,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:36,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642244777] [2021-02-23 18:04:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:36,866 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:36,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:04:36,882 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:04:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:04:36,897 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:04:36,949 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:04:36,949 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:04:36,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 18:04:36,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:04:36 BoogieIcfgContainer [2021-02-23 18:04:36,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:04:36,977 INFO L168 Benchmark]: Toolchain (without parser) took 28958.98 ms. Allocated memory was 151.0 MB in the beginning and 358.6 MB in the end (delta: 207.6 MB). Free memory was 125.5 MB in the beginning and 317.7 MB in the end (delta: -192.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:36,977 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:04:36,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:36,977 INFO L168 Benchmark]: Boogie Preprocessor took 68.10 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 99.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:36,977 INFO L168 Benchmark]: RCFGBuilder took 893.56 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 87.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:36,978 INFO L168 Benchmark]: TraceAbstraction took 27343.96 ms. Allocated memory was 151.0 MB in the beginning and 358.6 MB in the end (delta: 207.6 MB). Free memory was 87.3 MB in the beginning and 317.7 MB in the end (delta: -230.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:04:36,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 629.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.10 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 99.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 893.56 ms. Allocated memory is still 151.0 MB. Free memory was 99.7 MB in the beginning and 87.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27343.96 ms. Allocated memory was 151.0 MB in the beginning and 358.6 MB in the end (delta: 207.6 MB). Free memory was 87.3 MB in the beginning and 317.7 MB in the end (delta: -230.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: 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)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.2s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1024 SDtfs, 4413 SDslu, 8818 SDs, 0 SdLazy, 7739 SolverSat, 730 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 554 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3104 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 778 StatesRemovedByMinimization, 16 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...