/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-b7b32d2 [2021-02-21 20:36:42,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:36:42,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:36:42,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:36:42,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:36:42,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:36:42,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:36:42,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:36:42,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:36:42,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:36:43,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:36:43,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:36:43,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:36:43,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:36:43,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:36:43,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:36:43,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:36:43,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:36:43,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:36:43,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:36:43,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:36:43,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:36:43,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:36:43,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:36:43,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:36:43,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:36:43,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:36:43,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:36:43,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:36:43,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:36:43,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:36:43,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:36:43,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:36:43,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:36:43,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:36:43,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:36:43,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:36:43,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:36:43,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:36:43,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:36:43,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:36:43,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:36:43,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:36:43,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:36:43,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:36:43,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:36:43,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:36:43,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:36:43,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:36:43,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:36:43,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:36:43,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:36:43,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:36:43,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:36:43,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:36:43,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:36:43,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:36:43,114 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:36:43,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:36:43,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:36:43,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:36:43,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:36:43,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:36:43,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:36:43,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:36:43,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:36:43,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:36:43,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:36:43,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:36:43,516 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:36:43,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2021-02-21 20:36:43,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d093e17/ba267f79de2b4dd0b17b82c2101e67da/FLAGdce312ea7 [2021-02-21 20:36:44,338 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:36:44,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2021-02-21 20:36:44,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d093e17/ba267f79de2b4dd0b17b82c2101e67da/FLAGdce312ea7 [2021-02-21 20:36:44,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d093e17/ba267f79de2b4dd0b17b82c2101e67da [2021-02-21 20:36:44,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:36:44,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:36:44,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:36:44,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:36:44,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:36:44,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:36:44" (1/1) ... [2021-02-21 20:36:44,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e010010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:44, skipping insertion in model container [2021-02-21 20:36:44,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:36:44" (1/1) ... [2021-02-21 20:36:44,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:36:44,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:36:45,009 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] [2021-02-21 20:36:45,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:36:45,024 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:36:45,094 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] [2021-02-21 20:36:45,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:36:45,176 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:36:45,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45 WrapperNode [2021-02-21 20:36:45,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:36:45,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:36:45,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:36:45,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:36:45,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... [2021-02-21 20:36:45,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:36:45,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:36:45,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:36:45,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:36:45,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:36:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:36:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 20:36:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 20:36:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 20:36:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:36:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:36:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:36:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:36:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:36:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:36:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:36:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:36:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:36:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:36:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:36:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:36:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:36:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:36:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:36:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:36:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:36:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:36:45,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:36:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:36:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:36:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:36:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:36:45,448 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:36:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:36:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:36:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 20:36:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 20:36:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:36:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:36:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:36:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:36:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:36:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:36:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:36:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:36:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:36:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:36:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:36:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:36:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:36:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:36:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:36:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:36:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:36:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:36:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:36:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:36:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:36:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:36:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:36:45,898 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 20:36:46,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:36:46,077 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 20:36:46,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:36:46 BoogieIcfgContainer [2021-02-21 20:36:46,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:36:46,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:36:46,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:36:46,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:36:46,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:36:44" (1/3) ... [2021-02-21 20:36:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ee0706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:36:46, skipping insertion in model container [2021-02-21 20:36:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:36:45" (2/3) ... [2021-02-21 20:36:46,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ee0706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:36:46, skipping insertion in model container [2021-02-21 20:36:46,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:36:46" (3/3) ... [2021-02-21 20:36:46,093 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2021-02-21 20:36:46,100 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:36:46,106 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:36:46,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:36:46,152 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:36:46,153 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:36:46,153 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:36:46,153 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:36:46,153 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:36:46,153 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:36:46,154 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:36:46,154 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:36:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-21 20:36:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 20:36:46,182 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:46,183 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] [2021-02-21 20:36:46,183 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:46,190 INFO L82 PathProgramCache]: Analyzing trace with hash -461049234, now seen corresponding path program 1 times [2021-02-21 20:36:46,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:46,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996080796] [2021-02-21 20:36:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:46,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:46,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:46,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:46,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996080796] [2021-02-21 20:36:46,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:46,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:36:46,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040994706] [2021-02-21 20:36:46,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:36:46,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:36:46,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:36:46,539 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-21 20:36:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:46,711 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-02-21 20:36:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:36:46,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-21 20:36:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:46,723 INFO L225 Difference]: With dead ends: 115 [2021-02-21 20:36:46,723 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 20:36:46,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:36:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 20:36:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-21 20:36:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-21 20:36:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-21 20:36:46,778 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 26 [2021-02-21 20:36:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:46,779 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-21 20:36:46,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:36:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-21 20:36:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 20:36:46,781 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:46,781 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] [2021-02-21 20:36:46,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:36:46,782 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash 39557614, now seen corresponding path program 1 times [2021-02-21 20:36:46,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:46,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955536337] [2021-02-21 20:36:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:46,790 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:46,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:46,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:46,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:46,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:46,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:46,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:46,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:46,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955536337] [2021-02-21 20:36:46,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:46,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:36:46,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269165178] [2021-02-21 20:36:46,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:36:46,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:36:46,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:36:46,962 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 7 states. [2021-02-21 20:36:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:47,228 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2021-02-21 20:36:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:36:47,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-02-21 20:36:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:47,231 INFO L225 Difference]: With dead ends: 138 [2021-02-21 20:36:47,231 INFO L226 Difference]: Without dead ends: 132 [2021-02-21 20:36:47,233 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 [2021-02-21 20:36:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-21 20:36:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 74. [2021-02-21 20:36:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 20:36:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-21 20:36:47,248 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2021-02-21 20:36:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:47,248 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-21 20:36:47,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:36:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-21 20:36:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:36:47,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:47,251 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] [2021-02-21 20:36:47,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:36:47,251 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1904476042, now seen corresponding path program 1 times [2021-02-21 20:36:47,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:47,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7986960] [2021-02-21 20:36:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:47,279 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:47,284 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:47,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:47,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:47,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:47,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7986960] [2021-02-21 20:36:47,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:47,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:36:47,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990284948] [2021-02-21 20:36:47,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:36:47,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:47,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:36:47,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:36:47,401 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 7 states. [2021-02-21 20:36:47,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:47,656 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2021-02-21 20:36:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:36:47,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-21 20:36:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:47,658 INFO L225 Difference]: With dead ends: 141 [2021-02-21 20:36:47,659 INFO L226 Difference]: Without dead ends: 122 [2021-02-21 20:36:47,659 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 [2021-02-21 20:36:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-02-21 20:36:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2021-02-21 20:36:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 20:36:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-02-21 20:36:47,671 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 40 [2021-02-21 20:36:47,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:47,672 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-02-21 20:36:47,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:36:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-02-21 20:36:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:36:47,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:47,673 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] [2021-02-21 20:36:47,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:36:47,674 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1353809478, now seen corresponding path program 1 times [2021-02-21 20:36:47,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:47,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197563479] [2021-02-21 20:36:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:47,679 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:47,684 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:47,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:47,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:47,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:47,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:47,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:47,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197563479] [2021-02-21 20:36:47,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:47,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:36:47,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314830530] [2021-02-21 20:36:47,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:36:47,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:47,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:36:47,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:36:47,864 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 7 states. [2021-02-21 20:36:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:48,073 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-02-21 20:36:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:36:48,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-21 20:36:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:48,075 INFO L225 Difference]: With dead ends: 119 [2021-02-21 20:36:48,075 INFO L226 Difference]: Without dead ends: 99 [2021-02-21 20:36:48,076 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 [2021-02-21 20:36:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-21 20:36:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 66. [2021-02-21 20:36:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-21 20:36:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-21 20:36:48,084 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 40 [2021-02-21 20:36:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:48,085 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-21 20:36:48,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:36:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-21 20:36:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 20:36:48,086 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:48,087 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] [2021-02-21 20:36:48,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:36:48,087 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1775920989, now seen corresponding path program 1 times [2021-02-21 20:36:48,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:48,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756694901] [2021-02-21 20:36:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:48,111 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:48,115 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:48,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:48,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:48,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:48,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:48,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:36:48,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:48,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:48,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 20:36:48,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:48,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:48,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:48,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:48,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:48,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:48,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:48,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756694901] [2021-02-21 20:36:48,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:48,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:36:48,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113453102] [2021-02-21 20:36:48,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:36:48,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:36:48,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:36:48,482 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 15 states. [2021-02-21 20:36:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:49,293 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2021-02-21 20:36:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:36:49,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-02-21 20:36:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:49,295 INFO L225 Difference]: With dead ends: 148 [2021-02-21 20:36:49,295 INFO L226 Difference]: Without dead ends: 135 [2021-02-21 20:36:49,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:36:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-21 20:36:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 82. [2021-02-21 20:36:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-21 20:36:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2021-02-21 20:36:49,311 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 45 [2021-02-21 20:36:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:49,312 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2021-02-21 20:36:49,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:36:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2021-02-21 20:36:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 20:36:49,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:49,314 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] [2021-02-21 20:36:49,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:36:49,314 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash -76304527, now seen corresponding path program 1 times [2021-02-21 20:36:49,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:49,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152344344] [2021-02-21 20:36:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:49,334 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:49,338 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:49,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:49,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:49,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:49,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:49,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:36:49,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:49,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:49,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 20:36:49,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:49,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:49,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:49,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:49,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:49,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:49,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:49,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:49,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152344344] [2021-02-21 20:36:49,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:49,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:36:49,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671937501] [2021-02-21 20:36:49,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:36:49,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:36:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:36:49,637 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 15 states. [2021-02-21 20:36:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:50,590 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-02-21 20:36:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:36:50,590 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-02-21 20:36:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:50,592 INFO L225 Difference]: With dead ends: 164 [2021-02-21 20:36:50,593 INFO L226 Difference]: Without dead ends: 158 [2021-02-21 20:36:50,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:36:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-21 20:36:50,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 104. [2021-02-21 20:36:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-21 20:36:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2021-02-21 20:36:50,616 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 45 [2021-02-21 20:36:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:50,616 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2021-02-21 20:36:50,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:36:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2021-02-21 20:36:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-21 20:36:50,618 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:50,619 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] [2021-02-21 20:36:50,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:36:50,619 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:50,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1024942955, now seen corresponding path program 1 times [2021-02-21 20:36:50,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:50,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664970862] [2021-02-21 20:36:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:50,640 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:50,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:50,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:50,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:50,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:50,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:50,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:36:50,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:36:50,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:36:50,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:50,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:50,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:36:50,886 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:36:50,887 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:36:50,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:50,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:50,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:50,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:50,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:51,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:51,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:51,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664970862] [2021-02-21 20:36:51,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:51,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:36:51,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090777666] [2021-02-21 20:36:51,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:36:51,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:51,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:36:51,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:36:51,027 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2021-02-21 20:36:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:52,096 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-02-21 20:36:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:36:52,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2021-02-21 20:36:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:52,100 INFO L225 Difference]: With dead ends: 169 [2021-02-21 20:36:52,101 INFO L226 Difference]: Without dead ends: 163 [2021-02-21 20:36:52,102 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 [2021-02-21 20:36:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-02-21 20:36:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 108. [2021-02-21 20:36:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-21 20:36:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-02-21 20:36:52,128 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 51 [2021-02-21 20:36:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:52,128 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-02-21 20:36:52,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:36:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-02-21 20:36:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-21 20:36:52,130 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:52,130 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] [2021-02-21 20:36:52,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:36:52,131 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1245751225, now seen corresponding path program 1 times [2021-02-21 20:36:52,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:52,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202765129] [2021-02-21 20:36:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:52,149 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:52,153 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:52,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:52,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:52,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:36:52,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:52,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:36:52,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:52,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:36:52,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 20:36:52,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:36:52,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:52,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:52,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:52,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:52,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:52,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:52,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:52,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202765129] [2021-02-21 20:36:52,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:52,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:36:52,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227692155] [2021-02-21 20:36:52,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:36:52,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:52,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:36:52,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:36:52,420 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 15 states. [2021-02-21 20:36:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:53,187 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2021-02-21 20:36:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 20:36:53,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2021-02-21 20:36:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:53,189 INFO L225 Difference]: With dead ends: 176 [2021-02-21 20:36:53,190 INFO L226 Difference]: Without dead ends: 157 [2021-02-21 20:36:53,191 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 [2021-02-21 20:36:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-21 20:36:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2021-02-21 20:36:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-02-21 20:36:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2021-02-21 20:36:53,216 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 51 [2021-02-21 20:36:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2021-02-21 20:36:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:36:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2021-02-21 20:36:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-21 20:36:53,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:53,218 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] [2021-02-21 20:36:53,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:36:53,219 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash 209069449, now seen corresponding path program 1 times [2021-02-21 20:36:53,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:53,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904809241] [2021-02-21 20:36:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:53,238 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:53,242 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:53,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:53,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:53,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:53,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:53,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:36:53,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:36:53,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:36:53,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:53,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:53,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:36:53,478 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:36:53,479 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:36:53,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:53,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:53,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:53,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:53,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:53,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:53,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904809241] [2021-02-21 20:36:53,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:53,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:36:53,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641319555] [2021-02-21 20:36:53,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:36:53,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:36:53,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:36:53,645 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 16 states. [2021-02-21 20:36:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:54,731 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-02-21 20:36:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:36:54,732 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2021-02-21 20:36:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:54,733 INFO L225 Difference]: With dead ends: 173 [2021-02-21 20:36:54,733 INFO L226 Difference]: Without dead ends: 167 [2021-02-21 20:36:54,734 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 [2021-02-21 20:36:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-21 20:36:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2021-02-21 20:36:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-21 20:36:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2021-02-21 20:36:54,756 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 51 [2021-02-21 20:36:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:54,757 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2021-02-21 20:36:54,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:36:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2021-02-21 20:36:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:36:54,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:54,759 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] [2021-02-21 20:36:54,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:36:54,759 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:54,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1385511218, now seen corresponding path program 2 times [2021-02-21 20:36:54,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:54,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372008148] [2021-02-21 20:36:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:54,791 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:54,795 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:54,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:54,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:54,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:54,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:54,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:54,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:36:54,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:36:54,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:36:54,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:54,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:54,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:36:55,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:55,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:55,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:55,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:36:55,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:36:55,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:36:55,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:55,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:55,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:36:55,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:55,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:55,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:55,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:55,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:55,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372008148] [2021-02-21 20:36:55,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:55,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 20:36:55,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672464763] [2021-02-21 20:36:55,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 20:36:55,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:55,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 20:36:55,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:36:55,357 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand 22 states. [2021-02-21 20:36:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:36:57,530 INFO L93 Difference]: Finished difference Result 198 states and 210 transitions. [2021-02-21 20:36:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-21 20:36:57,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2021-02-21 20:36:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:36:57,532 INFO L225 Difference]: With dead ends: 198 [2021-02-21 20:36:57,532 INFO L226 Difference]: Without dead ends: 192 [2021-02-21 20:36:57,534 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 [2021-02-21 20:36:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-02-21 20:36:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 131. [2021-02-21 20:36:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-21 20:36:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2021-02-21 20:36:57,561 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 56 [2021-02-21 20:36:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:36:57,561 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2021-02-21 20:36:57,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 20:36:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2021-02-21 20:36:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:36:57,562 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:36:57,563 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] [2021-02-21 20:36:57,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:36:57,563 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:36:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:36:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash 8782656, now seen corresponding path program 1 times [2021-02-21 20:36:57,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:36:57,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021657594] [2021-02-21 20:36:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:36:57,583 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:36:57,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:36:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:57,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:57,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:57,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:36:57,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:57,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:36:57,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:36:57,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:36:57,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:36:57,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:57,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:36:57,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:57,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:57,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:57,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:36:57,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:36:57,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:57,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:36:58,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:58,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:36:58,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:36:58,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:36:58,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:36:58,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:36:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:36:58,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:36:58,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:36:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:36:58,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021657594] [2021-02-21 20:36:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:36:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 20:36:58,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118130340] [2021-02-21 20:36:58,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 20:36:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:36:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 20:36:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:36:58,285 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand 22 states. [2021-02-21 20:37:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:00,503 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2021-02-21 20:37:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-21 20:37:00,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2021-02-21 20:37:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:00,506 INFO L225 Difference]: With dead ends: 232 [2021-02-21 20:37:00,506 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 20:37:00,508 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 [2021-02-21 20:37:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 20:37:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 143. [2021-02-21 20:37:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-21 20:37:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-02-21 20:37:00,534 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 56 [2021-02-21 20:37:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:00,534 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-02-21 20:37:00,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 20:37:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-02-21 20:37:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 20:37:00,535 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:00,535 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] [2021-02-21 20:37:00,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:37:00,536 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash 703068211, now seen corresponding path program 2 times [2021-02-21 20:37:00,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:00,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292305897] [2021-02-21 20:37:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:00,552 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:00,556 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:00,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:00,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:00,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:00,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:00,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:00,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:00,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:37:00,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:00,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:00,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:37:00,740 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:37:00,741 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:37:00,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:00,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:00,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:00,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:00,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:00,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:00,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292305897] [2021-02-21 20:37:00,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:00,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:37:00,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621670036] [2021-02-21 20:37:00,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:37:00,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:00,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:37:00,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:37:00,867 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 16 states. [2021-02-21 20:37:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:01,927 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2021-02-21 20:37:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:37:01,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-21 20:37:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:01,930 INFO L225 Difference]: With dead ends: 209 [2021-02-21 20:37:01,930 INFO L226 Difference]: Without dead ends: 190 [2021-02-21 20:37:01,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-02-21 20:37:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-21 20:37:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2021-02-21 20:37:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-02-21 20:37:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-02-21 20:37:01,960 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 57 [2021-02-21 20:37:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:01,960 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-02-21 20:37:01,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:37:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-02-21 20:37:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 20:37:01,961 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:01,961 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] [2021-02-21 20:37:01,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:37:01,962 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash -333613565, now seen corresponding path program 1 times [2021-02-21 20:37:01,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:01,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600293802] [2021-02-21 20:37:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:01,978 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:01,982 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:02,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:02,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:02,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:02,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:02,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:02,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:02,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:37:02,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:02,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:02,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:37:02,166 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:37:02,167 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:37:02,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:02,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:02,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:02,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:02,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:02,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:02,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600293802] [2021-02-21 20:37:02,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:02,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:37:02,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747702359] [2021-02-21 20:37:02,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:37:02,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:02,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:37:02,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:37:02,329 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand 16 states. [2021-02-21 20:37:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:03,437 INFO L93 Difference]: Finished difference Result 187 states and 198 transitions. [2021-02-21 20:37:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:37:03,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-21 20:37:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:03,439 INFO L225 Difference]: With dead ends: 187 [2021-02-21 20:37:03,440 INFO L226 Difference]: Without dead ends: 161 [2021-02-21 20:37:03,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:37:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-02-21 20:37:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2021-02-21 20:37:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-21 20:37:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2021-02-21 20:37:03,473 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 57 [2021-02-21 20:37:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:03,474 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2021-02-21 20:37:03,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:37:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2021-02-21 20:37:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 20:37:03,475 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:03,475 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] [2021-02-21 20:37:03,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:37:03,476 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -388126303, now seen corresponding path program 2 times [2021-02-21 20:37:03,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:03,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789096553] [2021-02-21 20:37:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:03,494 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:03,497 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:03,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:03,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:03,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:03,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:03,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:03,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:03,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:37:03,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:03,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:03,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:37:03,676 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:37:03,677 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:37:03,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:03,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:03,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:03,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:03,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:03,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:03,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789096553] [2021-02-21 20:37:03,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:03,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:37:03,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641249399] [2021-02-21 20:37:03,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:37:03,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:37:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:37:03,830 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 16 states. [2021-02-21 20:37:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:04,974 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2021-02-21 20:37:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:37:04,974 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2021-02-21 20:37:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:04,976 INFO L225 Difference]: With dead ends: 173 [2021-02-21 20:37:04,976 INFO L226 Difference]: Without dead ends: 147 [2021-02-21 20:37:04,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:37:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-21 20:37:04,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2021-02-21 20:37:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-02-21 20:37:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-02-21 20:37:04,998 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 57 [2021-02-21 20:37:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:04,998 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-02-21 20:37:04,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:37:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-02-21 20:37:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:37:04,999 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:04,999 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] [2021-02-21 20:37:05,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:37:05,000 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:05,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1307444566, now seen corresponding path program 3 times [2021-02-21 20:37:05,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:05,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607832970] [2021-02-21 20:37:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:05,027 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:05,031 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:05,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:05,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:05,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:05,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:05,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:37:05,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:37:05,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:37:05,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:37:05,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:37:05,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 20:37:05,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:37:05,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-21 20:37:05,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 20:37:05,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 20:37:05,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 20:37:05,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:37:05,467 WARN L141 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size [2021-02-21 20:37:05,468 WARN L147 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size 27 [2021-02-21 20:37:05,498 WARN L141 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size [2021-02-21 20:37:05,501 WARN L147 QuantifierPusher]: treesize reduction 13, result has 63.9 percent of original size 23 [2021-02-21 20:37:05,539 WARN L141 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-02-21 20:37:05,540 WARN L147 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size 19 [2021-02-21 20:37:05,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:05,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:05,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:05,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:05,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:05,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:05,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607832970] [2021-02-21 20:37:05,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:05,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-21 20:37:05,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862507586] [2021-02-21 20:37:05,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-21 20:37:05,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-21 20:37:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-02-21 20:37:05,757 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 24 states. [2021-02-21 20:37:07,164 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-02-21 20:37:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:08,723 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2021-02-21 20:37:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-21 20:37:08,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2021-02-21 20:37:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:08,725 INFO L225 Difference]: With dead ends: 208 [2021-02-21 20:37:08,725 INFO L226 Difference]: Without dead ends: 195 [2021-02-21 20:37:08,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=451, Invalid=2629, Unknown=0, NotChecked=0, Total=3080 [2021-02-21 20:37:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-02-21 20:37:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2021-02-21 20:37:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-21 20:37:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2021-02-21 20:37:08,758 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 62 [2021-02-21 20:37:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:08,759 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2021-02-21 20:37:08,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-21 20:37:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2021-02-21 20:37:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:37:08,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:08,760 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] [2021-02-21 20:37:08,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:37:08,760 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:08,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash 270762790, now seen corresponding path program 1 times [2021-02-21 20:37:08,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:08,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223008988] [2021-02-21 20:37:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:08,786 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:08,790 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:08,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:08,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:08,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:08,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:08,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:08,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:37:08,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:37:08,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:37:08,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:08,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:37:08,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:08,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:08,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:09,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:09,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:37:09,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:37:09,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:37:09,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:09,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:09,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:37:09,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:09,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:09,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:09,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:09,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:09,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223008988] [2021-02-21 20:37:09,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:09,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 20:37:09,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592369968] [2021-02-21 20:37:09,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 20:37:09,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:09,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 20:37:09,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:37:09,350 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 22 states. [2021-02-21 20:37:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:11,436 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2021-02-21 20:37:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-21 20:37:11,436 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2021-02-21 20:37:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:11,438 INFO L225 Difference]: With dead ends: 201 [2021-02-21 20:37:11,438 INFO L226 Difference]: Without dead ends: 186 [2021-02-21 20:37:11,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2021-02-21 20:37:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-02-21 20:37:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2021-02-21 20:37:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-21 20:37:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2021-02-21 20:37:11,469 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 62 [2021-02-21 20:37:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:11,469 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2021-02-21 20:37:11,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 20:37:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2021-02-21 20:37:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:37:11,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:11,470 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] [2021-02-21 20:37:11,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 20:37:11,471 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:11,471 INFO L82 PathProgramCache]: Analyzing trace with hash 624075848, now seen corresponding path program 1 times [2021-02-21 20:37:11,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:11,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894297545] [2021-02-21 20:37:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:11,487 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:11,491 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:11,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:11,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:11,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:37:11,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:37:11,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:37:11,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:37:11,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:37:11,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:37:11,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:37:11,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:37:11,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:37:11,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:37:11,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:11,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:11,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:11,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:11,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894297545] [2021-02-21 20:37:11,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:11,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 20:37:11,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987877981] [2021-02-21 20:37:11,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 20:37:11,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:11,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 20:37:11,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-02-21 20:37:11,959 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 20 states. [2021-02-21 20:37:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:13,720 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2021-02-21 20:37:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 20:37:13,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2021-02-21 20:37:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:13,723 INFO L225 Difference]: With dead ends: 207 [2021-02-21 20:37:13,723 INFO L226 Difference]: Without dead ends: 188 [2021-02-21 20:37:13,724 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 [2021-02-21 20:37:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-02-21 20:37:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2021-02-21 20:37:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-21 20:37:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-02-21 20:37:13,758 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 62 [2021-02-21 20:37:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:13,758 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-02-21 20:37:13,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 20:37:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-02-21 20:37:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:37:13,759 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:13,760 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] [2021-02-21 20:37:13,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 20:37:13,760 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash -412605928, now seen corresponding path program 1 times [2021-02-21 20:37:13,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:13,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780362968] [2021-02-21 20:37:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:13,776 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:13,780 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:37:13,795 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:37:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:37:13,811 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:37:13,854 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:37:13,854 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:37:13,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-21 20:37:13,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:37:13 BoogieIcfgContainer [2021-02-21 20:37:13,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:37:13,877 INFO L168 Benchmark]: Toolchain (without parser) took 29234.29 ms. Allocated memory was 153.1 MB in the beginning and 389.0 MB in the end (delta: 235.9 MB). Free memory was 129.0 MB in the beginning and 244.8 MB in the end (delta: -115.8 MB). Peak memory consumption was 121.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:13,877 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:37:13,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.40 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 106.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:13,877 INFO L168 Benchmark]: Boogie Preprocessor took 104.20 ms. Allocated memory is still 153.1 MB. Free memory was 106.0 MB in the beginning and 103.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:13,877 INFO L168 Benchmark]: RCFGBuilder took 799.80 ms. Allocated memory is still 153.1 MB. Free memory was 103.3 MB in the beginning and 92.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:13,878 INFO L168 Benchmark]: TraceAbstraction took 27791.20 ms. Allocated memory was 153.1 MB in the beginning and 389.0 MB in the end (delta: 235.9 MB). Free memory was 91.8 MB in the beginning and 244.8 MB in the end (delta: -153.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:13,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 520.40 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 106.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.20 ms. Allocated memory is still 153.1 MB. Free memory was 106.0 MB in the beginning and 103.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 799.80 ms. Allocated memory is still 153.1 MB. Free memory was 103.3 MB in the beginning and 92.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27791.20 ms. Allocated memory was 153.1 MB in the beginning and 389.0 MB in the end (delta: 235.9 MB). Free memory was 91.8 MB in the beginning and 244.8 MB in the end (delta: -153.0 MB). Peak memory consumption was 84.4 MB. 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: 27.7s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 20.2s, 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, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 554 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3104 ImplicationChecksByTransitivity, 15.5s 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: 0.4s 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...